3.2.5

More abstraction of unlimited nametag mode (also a small fix from previous commit)
Unlimited NameTags - Make armor stands visible for spectators (#785 )
2023-02-13 16:40:36 +01:00 · 2023-02-13 14:25:38 +01:00 · 2023-02-13 13:57:49 +01:00 · 2023-02-13 12:54:05 +01:00 · 2023-02-12 12:51:37 +01:00 · 2023-02-12 12:29:06 +01:00
297 changed files with 11383 additions and 10201 deletions
@@ -1,6 +1,6 @@
 name: Bug Report
-description: Unwanted behavior that does not match configuration.
-labels: ["Bug"]
+description: Plugin does not work as described.
+labels: ["Type: Bug"]
 body:
  - type: input
    attributes:
@@ -45,7 +45,7 @@ body:
  - type: textarea
    attributes:
      label: Additional info
-      description: Any other info you want to provide, such as screenshots.
+      description: Anything else you want to provide that will help in resolving the issue faster, such as screenshots or videos.
    validations:
      required: false
  - type: checkboxes
@@ -57,5 +57,7 @@ body:
          required: true
        - label: I have read the wiki to make sure it's not an issue with configuration
          required: true
+        - label: I ticked all of the boxes without actually reading them
+          required: false
        - label: I have read the Compatibility wiki page and am not trying to run the plugin on an unsupported server version / platform
          required: true
@@ -1,6 +1,6 @@
 name: Error
 description: Error message with a stack trace in console or error file.
-labels: ["Error"]
+labels: ["Type: Error"]
 body:
  - type: input
    attributes:
@@ -51,5 +51,7 @@ body:
          required: true
        - label: I have included a paste of the error
          required: true
+        - label: I ticked all of the boxes without actually reading them
+          required: false
        - label: I have read the Compatibility wiki page and am not trying to run the plugin on an unsupported server version / platform
          required: true
@@ -1,6 +1,6 @@
 name: Wiki change
 description: Change to text on a wiki page or adding a new section.
-labels: ["Wiki"]
+labels: ["Type: Wiki change"]
 body:
  - type: input
    attributes:
@@ -11,21 +11,22 @@ jobs:
    name: Build
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.3.0 #https://github.com/actions/checkout/releases
        with:
          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
      - name: Set up JDK 11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v3.9.0 #https://github.com/actions/setup-java/releases
        with:
+          distribution: 'temurin'
          java-version: 11
      - name: Cache SonarCloud packages
-        uses: actions/cache@v1
+        uses: actions/cache@v3.2.3 #https://github.com/actions/cache/releases
        with:
          path: ~/.sonar/cache
          key: ${{ runner.os }}-sonar
          restore-keys: ${{ runner.os }}-sonar
      - name: Cache Gradle
-        uses: actions/cache@v2
+        uses: actions/cache@v3.2.3 #https://github.com/actions/cache/releases
        with:
          path: |
            ~/.gradle/caches
@@ -38,7 +39,7 @@ jobs:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
        run: ./gradlew clean build
      - name: Upload a Build Artifact
-        uses: actions/upload-artifact@v2.3.1
+        uses: actions/upload-artifact@v3.1.2 #https://github.com/actions/upload-artifact/releases
        with:
          name: Jar
          path: jar/build/libs/TAB-**.jar
@@ -0,0 +1,10 @@
+If this plugin has helped you in any way, and you would like to return something back 
+to make the plugin even better, there is a lot of ways to contribute:  
+* Open a **pull request** containing a new feature or a bug fix, which you believe many users will benefit from.
+* Make detailed high-quality **bug reports**. The difference between a bug getting fixed in 1 week vs 1 hour 
+is in quality of the report (typically providing correct steps to reproduce that actually work).
+* Test **experimental builds**, which can be found in [Github Actions](https://github.com/NEZNAMY/TAB/actions) for problems of any kind including bugs. 
+This way you will help make the actual releases more stable / help get stable releases sooner.
+* Help improve the wiki by opening a [Wiki change issue](https://github.com/NEZNAMY/TAB/issues/new?assignees=&labels=Wiki&template=wiki_change.yml), 
+where you can improve existing descriptions, add information you found missing, fix typos / grammar mistakes or add more examples of usage of functions.
+* [Buy a copy](https://builtbybit.com/resources/14009/) of the plugin or [send a donation](https://paypal.me/neznamy1) to keep the plugin active.
@@ -0,0 +1,174 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
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+
+      "Work" shall mean the work of authorship, whether in Source or
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+      of this License, Derivative Works shall not include works that remain
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+      "Contribution" shall mean any work of authorship, including
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+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
@@ -6,8 +6,8 @@ More information can be found at [Why TAB?](https://github.com/NEZNAMY/TAB/wiki/
 # Distribution
 As of TAB 3.0.0, released with MC 1.18 (November 30th, 2021), there is no free / premium
 version anymore. Only one version of the plugin exists now, which contains all implemented features
-and is available to everyone for free. However, official support on discord is only provided to 
-those who have purchased the plugin.  
+and is available to everyone for free. However, customer support is only provided to 
+customers who have purchased the plugin.  

 # Compiling
 Compilation requires JDK 8 and up.  
@@ -15,18 +15,10 @@ To compile the plugin, run `./gradlew build` from the terminal.
 Once the plugin compiles, grab the jar from `/jar/build/libs/` folder.

 # Links
-The precompiled JAR can be downloaded for free from:  
-* Releases: https://github.com/NEZNAMY/TAB/releases
-* MC-Market: https://www.mc-market.org/resources/20631/
-
-Supporting my work:  
-* MC-Market: https://www.mc-market.org/resources/14009/
-* Polymart: https://polymart.org/resource/484
-* Donation link: https://paypal.me/neznamy1
-
-Other links:
-* Discord: https://discord.gg/EaSvdk6  
-* Wiki: https://github.com/NEZNAMY/TAB/wiki  
+Download the plugin for free: [GitHub releases](https://github.com/NEZNAMY/TAB/releases), 
+[BuiltByBit](https://builtbybit.com/resources/20631/), [Modrinth](https://modrinth.com/plugin/tab-was-taken)  
+Support my work & receive customer support: [BuiltByBit](https://builtbybit.com/resources/14009/), [Polymart](https://polymart.org/resource/484)  
+Other links: [Discord support for customers](https://discord.gg/EaSvdk6), [Wiki](https://github.com/NEZNAMY/TAB/wiki)  

 # Issues
 The [Issues](https://github.com/NEZNAMY/TAB/issues) section is **only** available for cases included in templates.
@@ -34,15 +26,9 @@ In other words, they **are not available for**:
 * **Support** - support is provided on discord for buyers, where roles are given to verified users
 allowing us to know who bought it and who didn't. It also serves as a much faster way of communication.
 * **Feature requests** - closed indefinitely.
+  
+**If you're a customer, please use discord for reporting bugs, especially if you aren't good at making bug reports. 
+You will be provided with a much faster and higher quality service.**

 # Contributing
-If this plugin has helped you in any way, and you would like to return something back 
-to make the plugin even better, there is a lot of ways to contribute:  
-* Open a **pull request** containing a new feature or a bug fix, which you believe many users will benefit from.
-* Make detailed high-quality **bug reports**. The difference between a bug getting fixed in 1 week vs 1 hour 
-is in quality of the report (typically providing correct steps to reproduce that actually work).
-* Test **experimental builds**, which can be found in [Github Actions](https://github.com/NEZNAMY/TAB/actions) or in a form of pre-releases on discord
-for problems of any kind including bugs. This way you will help make the actual releases more stable / help get stable releases sooner.
-* Help improve the wiki by opening a [Wiki change issue](https://github.com/NEZNAMY/TAB/issues/new?assignees=&labels=Wiki&template=wiki_change.yml), 
-where you can improve existing descriptions, add information you found missing, fix typos / grammar mistakes or add more examples of usage of functions.
-* [Buy a copy](https://www.mc-market.org/resources/14009/) of the plugin or [send a donation](https://paypal.me/neznamy1) to keep the plugin active.
+See [CONTRIBUTING.md](https://github.com/NEZNAMY/TAB/blob/master/CONTRIBUTING.md)
@@ -1,3 +1,7 @@
+plugins {
+    id("net.kyori.blossom") version "1.2.0"
+}
+
 dependencies {
    compileOnlyApi(libs.netty)
    api(libs.jsonSimple) {
@@ -6,4 +10,16 @@ dependencies {
    compileOnlyApi(libs.snakeyaml)
    api(libs.yamlAssist)
    compileOnlyApi(libs.gson)
+    compileOnlyApi(libs.adventureMiniMessage)
+    compileOnlyApi(libs.adventureApi)
+    compileOnlyApi(libs.adventureLegacy)
+}
+
+blossom {
+    replaceToken("@plugin_version@", project.version)
+    replaceTokenIn("src/main/java/me/neznamy/tab/api/TabConstants.java")
+}
+
+tasks.javadoc {
+    enabled = project.hasProperty("enable-javadoc")
 }
@@ -1,28 +1,37 @@
 package me.neznamy.tab.api;

+/**
+ * Interface representing an armor stand attached to player
+ * for displaying text in game.
+ */
 public interface ArmorStand {

    /**
     * Returns true if offset is static, false if not
-     * @return true if static, false if dynamic
+     *
+     * @return  true if static, false if dynamic
     */
-    boolean hasStaticOffset();
+    boolean isStaticOffset();
    
    /**
     * Changes offset of the armor stand
-     * @param offset - new offset
+     *
+     * @param   offset
+     *          new offset
     */
    void setOffset(double offset);

    /**
     * Returns offset of the armor stand
-     * @return offset from base
+     *
+     * @return  offset from base
     */
    double getOffset();
    
    /**
     * Returns property for armor stand's name
-     * @return property for armor stand's name
+     *
+     * @return  property for armor stand's name
     */
    Property getProperty();
    
@@ -33,14 +42,17 @@ public interface ArmorStand {
    
    /**
     * Teleports armor stand to owner's current location for specified player
-     * @param viewer - player to send packet to
+     *
+     * @param   viewer
+     *          player to send packet to
     */
    void teleport(TabPlayer viewer);
    
    /**
     * Changes sneaking flag and sends packets to everyone in range
-     * @param    sneaking
-     *             new sneaking status
+     *
+     * @param   sneaking
+     *          new sneaking status
     */
    void sneak(boolean sneaking);
    
@@ -51,7 +63,9 @@ public interface ArmorStand {
    
    /**
     * DeSpawns armor stand for specified player
-     * @param viewer - player to send packet to
+     *
+     * @param   viewer
+     *          player to send packet to
     */
    void destroy(TabPlayer viewer);
    
@@ -62,21 +76,33 @@ public interface ArmorStand {
    
    /**
     * Updates visibility if needed
-     * @param force - if refresh should be forced
+     *
+     * @param   force
+     *          if refresh should be forced
     */
    void updateVisibility(boolean force);
    
    /**
     * Returns entity ID of this armor stand
-     * @return entity ID of this armor stand
+     *
+     * @return  entity ID of this armor stand
     */
    int getEntityId();
    
    /**
     * Spawns armor stand for specified player
-     * @param viewer - player to spawn for
+     *
+     * @param   viewer
+     *          player to spawn for
     */
    void spawn(TabPlayer viewer);
-    
+
+    /**
+     * Sends respawn packets to specified player to make position
+     * change instant instead of teleport animation
+     *
+     * @param   viewer
+     *          Player to send armor stand respawn packets to
+     */
    void respawn(TabPlayer viewer);
 }
@@ -10,5 +10,11 @@ public interface ArmorStandManager {
     */
    void destroy();

+    /**
+     * Refreshes text of all armor stands for all nearby players
+     *
+     * @param   force
+     *          If refresh should be force despite no update seemingly being needed
+     */
    void refresh(boolean force);
 }
@@ -1,35 +1,116 @@
 package me.neznamy.tab.api;

+import java.util.UUID;
+
+/**
+ * Feature manager allows registration and work with features.
+ */
 public interface FeatureManager {

    /**
     * Registers a feature, which will start receiving events
     * 
-     * @param name - name of feature
-     * @param feature - the handler
+     * @param   name
+     *          name of feature
+     * @param   feature
+     *          the handler
     */
    void registerFeature(String name, TabFeature feature);
    
    /**
     * Unregisters feature making it no longer receive events. This does not run unload method nor cancel
     * tasks created by the feature
-     * @param name - feature name defined in registerFeature
+     *
+     * @param   name
+     *          feature name defined in registerFeature
     */
    void unregisterFeature(String name);
    
    /**
     * Returns whether a feature with said name is registered or not
     * 
-     * @param name - name of feature defined in registerFeature method
-     * @return true if feature exists, false if not
+     * @param   name
+     *          name of feature defined in registerFeature method
+     * @return  true if feature exists, false if not
     */
    boolean isFeatureEnabled(String name);

    /**
     * Returns feature handler by its name
     * 
-     * @param name - name of feature defined in registerFeature method
-     * @return the feature or null if feature does not exist
+     * @param   name
+     *          name of feature defined in registerFeature method
+     * @return  the feature or null if feature does not exist
     */
    TabFeature getFeature(String name);
+
+    /**
+     * Calls onQuit(TabPlayer) to all enabled features
+     *
+     * @param   disconnectedPlayer
+     *          player who disconnected
+     */
+    void onQuit(TabPlayer disconnectedPlayer);
+
+    /**
+     * Calls onJoin(TabPlayer) to all enabled features
+     *
+     * @param   connectedPlayer
+     *          player who connected
+     */
+    void onJoin(TabPlayer connectedPlayer);
+
+    /**
+     * Calls onServerChange(TabPlayer, String, String) to all enabled features
+     *
+     * @param   playerUUID
+     *          player who switched server
+     * @param   to
+     *          name of the new server
+     */
+    void onServerChange(UUID playerUUID, String to);
+
+    /**
+     * Calls onWorldChange(TabPlayer, String, String) to all enabled features
+     *
+     * @param   playerUUID
+     *          player who switched world
+     * @param   to
+     *          name of the new world
+     */
+    void onWorldChange(UUID playerUUID, String to);
+
+    /**
+     * Calls onCommand(TabPlayer, String) to all enabled features
+     *
+     * @param   sender
+     *          command sender
+     * @param   command
+     *          command line including /
+     * @return  {@code true} if some feature marked the command for cancel, {@code false} if not
+     */
+    boolean onCommand(TabPlayer sender, String command);
+
+    /**
+     * Internal function that marks objective packet deserialization
+     * when at least 1 feature uses it.
+     * <p>
+     * Internal use only.
+     */
+    void markObjective();
+
+    /**
+     * Internal function that marks display objective packet deserialization
+     * when at least 1 feature uses it.
+     * <p>
+     * Internal use only.
+     */
+    void markDisplayObjective();
+
+    /**
+     * Returns array of all currently enabled features
+     *
+     * @return  array of all currently enabled features
+     */
+    TabFeature[] getValues();
 }
@@ -1,16 +1,82 @@
 package me.neznamy.tab.api;

+/**
+ * Interface allowing to send header/footer to players.
+ * <p>
+ * Instance can be obtained using {@link TabAPI#getHeaderFooterManager()}.
+ * This requires the Header/footer feature to be enabled in config, otherwise
+ * the method will return {@code null}.
+ */
 public interface HeaderFooterManager {

+    /**
+     * Sets raw value of header to specified value. This overrides plugin
+     * configuration until reset is called. Has full placeholder support
+     * and will send update packet whenever a placeholder used inside
+     * changes its value.
+     *
+     * @param   player
+     *          Player to set header for
+     * @param   header
+     *          Raw header value
+     */
    void setHeader(TabPlayer player, String header);

+    /**
+     * Sets raw value of footer to specified value. This overrides plugin
+     * configuration until reset is called. Has full placeholder support
+     * and will send update packet whenever a placeholder used inside
+     * changes its value.
+     *
+     * @param   player
+     *          Player to set header for
+     * @param   footer
+     *          Raw footer value
+     */
    void setFooter(TabPlayer player, String footer);

+    /**
+     * Sets raw value of header and footer to specified values. This overrides plugin
+     * configuration until reset is called. Has full placeholder support
+     * and will send update packet whenever a placeholder used inside
+     * changes its value.
+     *
+     * @param   player
+     *          Player to set header for
+     * @param   header
+     *          Raw header value
+     * @param   footer
+     *          Raw footer value
+     */
    void setHeaderAndFooter(TabPlayer player, String header, String footer);

+    /**
+     * Resets header value previously set using {@link #setHeader(TabPlayer, String)}
+     * or {@link #setHeaderAndFooter(TabPlayer, String, String)} and restores internal
+     * logic using configuration files.
+     *
+     * @param   player
+     *          Player to reset header for
+     */
    void resetHeader(TabPlayer player);

+    /**
+     * Resets footer value previously set using {@link #setFooter(TabPlayer, String)}
+     * or {@link #setHeaderAndFooter(TabPlayer, String, String)} and restores internal
+     * logic using configuration files.
+     *
+     * @param   player
+     *          Player to reset header for
+     */
    void resetFooter(TabPlayer player);

+    /**
+     * Resets values previously set using {@link #setHeader(TabPlayer, String)},
+     * {@link #setFooter(TabPlayer, String)} or {@link #setHeaderAndFooter(TabPlayer, String, String)}
+     * and restores internal logic using configuration files.
+     *
+     * @param   player
+     *          Player to reset header and footer for
+     */
    void resetHeaderAndFooter(TabPlayer player);
 }
@@ -1,54 +1,68 @@
 package me.neznamy.tab.api;

+/**
+ * An interface representing a property assigned to a player,
+ * which may contain placeholders and can be changed using the API.
+ */
 public interface Property {

    /**
     * Returns original raw value ignoring API calls
-     * @return original raw value
+     *
+     * @return  original raw value
     */
    String getOriginalRawValue();

    /**
     * Temporarily overrides current raw value with an API call
-     * @param temporaryValue - temporary value to be assigned
+     *
+     * @param   temporaryValue
+     *          temporary value to be assigned
     */
    void setTemporaryValue(String temporaryValue);

    /**
     * Returns current temporary value
-     * @return temporary value or null if not set
+     *
+     * @return  temporary value or null if not set
     */
    String getTemporaryValue();

    /**
     * Returns temporary value (via API) if present, raw value otherwise
-     * @return current raw value
+     *
+     * @return  current raw value
     */
    String getCurrentRawValue();

    /**
     * Returns last known value
-     * @return last known value
+     *
+     * @return  last known value
     */
    String get();

    /**
     * Replaces all placeholders in current raw value, colorizes it, removes remove-strings and returns whether value changed or not
-     * @return if updating changed value or not
+     *
+     * @return  if updating changed value or not
     */
    boolean update();

    /**
     * Replaces all placeholders in current raw value, colorizes it, removes remove-strings and returns it.
     * Equal to calling update() and then get().
-     * @return updated value
+     *
+     * @return  updated value
     */
    String updateAndGet();

    /**
     * Returns value for defined viewer by applying relational placeholders to last known value
-     * @param viewer - the viewer
-     * @return format for the viewer
+     *
+     * @param   viewer
+     *          the viewer
+     * @return  format for the viewer
     */
    String getFormat(TabPlayer viewer);
 }
@@ -1,30 +1,147 @@
 package me.neznamy.tab.api;

-import java.util.HashMap;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
+import java.util.stream.Collectors;

+/**
+ * Interface representing user or group configuration.
+ * Implementation is either using file or MySQL, if it's enabled.
+ */
 public interface PropertyConfiguration {

-    void setProperty(String name, String property, String server, String world, String value);
+    /**
+     * Sets property value of group or user to specified value. If {@code world} or
+     * {@code server} is not {@code null}, value will be inserted as a per-world or
+     * per-server setting. If both {@code world} and {@code server} are {@code null},
+     * value is inserted as a global setting.
+     *
+     * @param   groupOrUser
+     *          Name of group or user, depending on what this instance handles
+     * @param   property
+     *          Name of property to set
+     * @param   server
+     *          Name of server to apply setting to, {@code null} for global setting
+     * @param   world
+     *          Name of world to apply setting to, {@code null} for global setting
+     * @param   value
+     *          Value of the property
+     */
+    void setProperty(String groupOrUser, String property, String server, String world, String value);

-    String[] getProperty(String name, String property, String server, String world);
+    /**
+     * Gets property of group or user. If {@code server} or {@code world}
+     * are not {@code null}, per-server / per-world settings are checked first
+     * to try to find a match. If no match is found, global value is returned.
+     * Returned value is an array with 2 elements, with first argument being value
+     * and second being source. If nothing is found, empty array is returned.
+     *
+     * @param   groupOrUser
+     *          Name of group or user, depending on what this instance handles
+     * @param   property
+     *          Name of property to get
+     * @param   server
+     *          Server the player is currently in, to allow check for per-server settings
+     * @param   world
+     *          World the player is currently in, to allow check for per-world settings
+     * @return  Array with 2 elements with value being first, source second if found,
+     *          empty array if nothing was found.
+     */
+    String[] getProperty(String groupOrUser, String property, String server, String world);

-    void remove(String name);
+    /**
+     * Removes all data applied to specified group or user.
+     *
+     * @param   groupOrUser
+     *          Name of group or user, depending on what this instance handles
+     */
+    void remove(String groupOrUser);

-    Map<String, String> getGlobalSettings(String name);
+    /**
+     * Returns map of global settings applied to specified group or user.
+     * Map key is property name, value is property value.
+     *
+     * @param   groupOrUser
+     *          Name of group or user, depending on what this instance handles
+     * @return  Map of global settings of specified group or user
+     */
+    Map<String, Object> getGlobalSettings(String groupOrUser);

-    Map<String, Map<String, String>> getPerWorldSettings(String name);
+    /**
+     * Returns map of per-world settings of specified group or user.
+     * Map key is world name, value is property name-value map in that world.
+     *
+     * @param   groupOrUser
+     *          Name of group or user, depending on what this instance handles
+     * @return  Map of per-world settings of specified group or user
+     */
+    Map<String, Map<String, Object>> getPerWorldSettings(String groupOrUser);

-    Map<String, Map<String, String>> getPerServerSettings(String name);
+    /**
+     * Returns map of per-server settings of specified group or user.
+     * Map key is server name, value is property name-value map in that server.
+     *
+     * @param   groupOrUser
+     *          Name of group or user, depending on what this instance handles
+     * @return  Map of per-server settings of specified group or user
+     */
+    Map<String, Map<String, Object>> getPerServerSettings(String groupOrUser);

+    /**
+     * Returns set of all groups or users that have anything configured,
+     * either globally or in some world or server.
+     *
+     * @return  Set of all entries with something configured
+     */
    Set<String> getAllEntries();

-    default Map<String, Map<String, String>> convertMap(Map<String, Map<String, Map<String, String>>> map, String key) {
-        Map<String, Map<String, String>> converted = new HashMap<>();
-        for (Map.Entry<String, Map<String, Map<String, String>>> entry : map.entrySet()) {
-            converted.put(entry.getKey(), entry.getValue().get(key));
+    /**
+     * Converts per-world or per-server map into a per-world or per-server map
+     * with values only belonging to entered group or user. In other words, extracts
+     * settings belonging to group or user from the map.
+     *
+     * @param   map
+     *          Original per-world or per-server setting map
+     * @param   groupOrUser
+     *          Name of group or user, depending on what this instance handles
+     * @return  Converted map only containing data of specified group or user
+     */
+    default Map<String, Map<String, Object>> convertMap(Map<String, Map<String, Map<String, Object>>> map, String groupOrUser) {
+        Map<String, Map<String, Object>> converted = new HashMap<>();
+        for (Map.Entry<String, Map<String, Map<String, Object>>> entry : map.entrySet()) {
+            converted.put(entry.getKey(), entry.getValue().get(groupOrUser));
        }
        return converted;
    }
+
+    /**
+     * Converts object into string. For most objects, {@link Object#toString()} is called.
+     * For lists, entries are connected with {@code "\n"}.
+     *
+     * @param   obj
+     *          Object to convert
+     * @return  Converted string
+     */
+    @SuppressWarnings("unchecked")
+    default String toString(Object obj) {
+        if (obj instanceof List) {
+            return ((List<Object>)obj).stream().map(Object::toString).collect(Collectors.joining("\n"));
+        }
+        return obj.toString();
+    }
+
+    /**
+     * Converts string into object. If string contains {@code "\n"},
+     * a list is created using {@code "\n"} as a separator. Otherwise,
+     * inserted string is returned.
+     *
+     * @param   string
+     *          String to convert
+     * @return  Converted object
+     */
+    default Object fromString(String string) {
+        if (string != null && string.contains("\n")) {
+            return Arrays.asList(string.split("\n"));
+        }
+        return string;
+    }
 }
@@ -1,5 +1,8 @@
 package me.neznamy.tab.api;

+import lombok.Getter;
+import lombok.Setter;
+
 /**
 * Enum class representing all possibly used protocol versions
 */
@@ -8,6 +11,10 @@ public enum ProtocolVersion {
    UNKNOWN_SERVER_VERSION ("Unknown"),
    UNKNOWN_CLIENT_VERSION ("Unknown"),
    PROXY   ("Proxy"),
+    V1_19_3 (761),
+    V1_19_2 (760),
+    V1_19_1 (760),
+    V1_19   (759),
    V1_18_2 (758),
    V1_18_1 (757),
    V1_18   (757),
@@ -65,18 +72,23 @@ public enum ProtocolVersion {
    /** Value array to iterate over to avoid array creations on each call */
    public static final ProtocolVersion[] VALUES = values();

-    //version's network id found at https://wiki.vg/Protocol_version_numbers
-    private final int networkId;
+    /** Version's network id found at https://wiki.vg/Protocol_version_numbers */
+    @Getter private final int networkId;

-    //minor version, such as 16
-    private int minorVersion;
+    /** Version's minor version, such as 16 for 1.16.x. Allowing override to
+     * set minor version of UNKNOWN_SERVER_VERSION value to value from package to fix compatibility
+     * with server forks that set bukkit version field value to "Unknown".
+     */
+    @Getter @Setter private int minorVersion;

-    //friendly name displayed in %player-version% placeholder
-    private final String friendlyName;
+    /** Version's friendly name displayed in %player-version% placeholder */
+    @Getter private final String friendlyName;

    /**
     * Constructs new instance with given network id
-     * @param networkId - network id of this version
+     *
+     * @param   networkId
+     *          network id of this version
     */
    ProtocolVersion(int networkId){
        this.networkId = networkId;
@@ -86,7 +98,9 @@ public enum ProtocolVersion {

    /**
     * Constructs new instance with given friendly name
-     * @param friendlyName - friendly name to display
+     *
+     * @param   friendlyName
+     *          friendly name to display
     */
    ProtocolVersion(String friendlyName){
        this.networkId = 999;
@@ -94,45 +108,12 @@ public enum ProtocolVersion {
        this.friendlyName = friendlyName;
    }

-    /**
-     * Returns the version's network id
-     * @return version's network id
-     */
-    public int getNetworkId() {
-        return networkId;
-    }
-
-    /**
-     * Returns user-friendly name of the version (such as 1.16.2 instead of V1_16_2)
-     * @return    user-friendly name of the version
-     */
-    public String getFriendlyName() {
-        return friendlyName;
-    }
-
-    /**
-     * Returns minor version of this release, such as 8 for 1.8.x or 13 for 1.13.x
-     * @return version's minor version
-     */
-    public int getMinorVersion() {
-        return minorVersion;
-    }
-
-    /**
-     * Overrides minor version of the version instance. This is used internally to
-     * set minor version of UNKNOWN_SERVER_VERSION value to value from package to fix compatibility
-     * with server forks that set bukkit version field value to "Unknown".
-     * @param    minorVersion
-     *             minor version to change value to
-     */
-    public void setMinorVersion(int minorVersion) {
-        this.minorVersion = minorVersion;
-    }
-
    /**
     * Returns enum constant of entered version or UNKNOWN_SERVER_VERSION if unknown version
-     * @param friendlyName - friendly name of the version
-     * @return version or UNKNOWN_SERVER_VERSION if version is unknown
+     *
+     * @param   friendlyName
+     *          friendly name of the version
+     * @return  version or UNKNOWN_SERVER_VERSION if version is unknown
     */
    public static ProtocolVersion fromFriendlyName(String friendlyName) {
        if (friendlyName.startsWith("1.8")) return V1_8;
@@ -145,8 +126,10 @@ public enum ProtocolVersion {

    /**
     * Returns version from given network id
-     * @param networkId - network id of protocol version
-     * @return version from given network id
+     *
+     * @param   networkId
+     *          network id of protocol version
+     * @return  version from given network id
     */
    public static ProtocolVersion fromNetworkId(int networkId) {
        for (ProtocolVersion v : VALUES) {
@@ -15,103 +15,199 @@ import me.neznamy.tab.api.team.TeamManager;
 */
 public abstract class TabAPI {

+    /** Instance of the API */
    private static TabAPI instance;

-    public static TabAPI getInstance() {
-        return instance;
+    /**
+     * Constructs new instance and sets it as new API instance
+     */
+    public TabAPI() {
+        instance = this;
    }

-    public static void setInstance(TabAPI instance) {
-        TabAPI.instance = instance;
+    /**
+     * Returns API instance. If instance was not set by the plugin, throws
+     * {@code IllegalStateException}. This is usually caused by shading the API
+     * into own project, which is not allowed. Another option is calling the method
+     * before plugin was able to load.
+     *
+     * @return  API instance
+     * @throws  IllegalStateException
+     *          If instance is {@code null}
+     */
+    public static TabAPI getInstance() {
+        if (instance == null) throw new IllegalStateException("API instance is null. This likely means you shaded TAB's API into your project" +
+                " instead of only using it, which is not allowed.");
+        return instance;
    }

    /**
     * Returns player object from given UUID
-     * @return player object from given UUID
-     * @param id - Player UUID
+     *
+     * @param   id
+     *          Player UUID
+     * @return  player object from given UUID
     */
    public abstract TabPlayer getPlayer(UUID id);

    /**
     * Returns player object from given name
-     * @return player object from given name
-     * @param name - Player name
+     *
+     * @param   name
+     *          Player name
+     * @return  player object from given name
     */
    public abstract TabPlayer getPlayer(String name);

    /**
     * Returns collection of all online players. Will return empty list if plugin is disabled (due to a broken configuration file for example).
-     * @return collection of online players
+     *
+     * @return  collection of online players
     */
    public abstract TabPlayer[] getOnlinePlayers();

    /**
-     * Return BossBar manager instance if the feature is enabled. Returns null otherwise.
-     * @return BossBar manager
+     * Return BossBar manager instance if the feature is enabled. If not, returns {@code null}.
+     *
+     * @return  BossBar manager
     */
    public abstract BossBarManager getBossBarManager();

    /**
-     * Returns scoreboard manager instance if the feature is enabled. Returns null otherwise.
-     * @return scoreboard manager
+     * Returns scoreboard manager instance if the feature is enabled. If not, returns {@code null}.
+     *
+     * @return  scoreboard manager
     */
    public abstract ScoreboardManager getScoreboardManager();

    /**
-     * Returns team manager instance if the feature is enabled, false otherwise
-     * @return team manager
+     * Returns team manager instance if the feature is enabled. If not, returns {@code null}.
+     *
+     * @return  team manager
     */
    public abstract TeamManager getTeamManager();

+    /**
+     * Returns header/footer manager instance if the feature is enabled. If not, returns {@code null}.
+     *
+     * @return  Header/footer manager
+     */
    public abstract HeaderFooterManager getHeaderFooterManager();

    /**
     * Returns PlaceholderManager instance
-     * @return PlaceholderManager instance
+     *
+     * @return  PlaceholderManager instance
     */
    public abstract PlaceholderManager getPlaceholderManager();

    /**
     * Returns feature manager instance
-     * @return feature manager instance
+     *
+     * @return  feature manager instance
     */
    public abstract FeatureManager getFeatureManager();

+    /**
+     * Returns Tablist name format manager instance if the feature is enabled. If not, returns {@code null}.
+     *
+     * @return  Tablist name format manager
+     */
    public abstract TablistFormatManager getTablistFormatManager();

    /**
     * Gets the event bus for registering listeners for TAB events.
     *
-     * @return the event bus
+     * @return  the event bus
     */
    public abstract EventBus getEventBus();

    /**
     * Returns server version. On proxy installation returns PROXY.
-     * @return server version
+     *
+     * @return  server version
     */
    public abstract ProtocolVersion getServerVersion();

    /**
     * Prints message into console
-     * @param message - message to print
-     * @param translateColors - true if colors should be translated, false if not
+     *
+     * @param   message
+     *          message to print
+     * @param   translateColors
+     *          {@code true} if colors should be translated, {@code false} if not
     */
    public abstract void sendConsoleMessage(String message, boolean translateColors);

+    /**
+     * Returns TAB's Thread manager, which allows task submitting
+     *
+     * @return  ThreadManager instance
+     */
    public abstract ThreadManager getThreadManager();

+    /**
+     * Returns TAB's cache file used to store player toggle data
+     *
+     * @return  TAB's player cache file
+     */
    public abstract ConfigurationFile getPlayerCache();

+    /**
+     * Returns TAB's config.yml file
+     *
+     * @return  config.yml file
+     */
    public abstract ConfigurationFile getConfig();

+    /**
+     * Returns TAB's group configuration
+     *
+     * @return  TAB's group configuration
+     */
    public abstract PropertyConfiguration getGroups();

+    /**
+     * Returns TAB's user configuration
+     *
+     * @return  TAB's user configuration
+     */
    public abstract PropertyConfiguration getUsers();

+    /**
+     * Sends a debug message into console if the option
+     * is enabled in config.
+     *
+     * @param   message
+     *          Message to send
+     */
    public abstract void debug(String message);

+    /**
+     * Logs an error into errors.log file
+     *
+     * @param   message
+     *          Error message
+     * @param   t
+     *          Thrown error
+     */
    public abstract void logError(String message, Throwable t);

+    /**
+     * Sets name of file with syntax error, which prevented
+     * the plugin from enabling. Internal use only.
+     *
+     * @param   file
+     *          Name of file with syntax error
+     */
    public abstract void setBrokenFile(String file);
+
+    /**
+     * Returns {@code true} if the plugin is currently disabled due to an error,
+     * either a yaml syntax error or an internal startup error. Returns {@code false}
+     * if the plugin is properly running.
+     *
+     * @return  {@code true} if disabled, {@code false} if running correctly
+     */
+    public abstract boolean isPluginDisabled();
 }
@@ -1,4 +1,4 @@
-package me.neznamy.tab.shared;
+package me.neznamy.tab.api;

 /**
 * A class containing various constants used everywhere in the plugin
@@ -7,7 +7,8 @@ package me.neznamy.tab.shared;
 public class TabConstants {

    public static final String PLUGIN_VERSION = "@plugin_version@";
-    public static final String DEFAULT_GROUP = "NONE";
+    public static final String NO_GROUP = "NONE";
+    public static final String DEFAULT_GROUP = "_DEFAULT_";
    public static final String PLUGIN_MESSAGE_CHANNEL_NAME = "tab:bridge-2";
    public static final String REDIS_CHANNEL_NAME = "TAB";

@@ -31,8 +32,6 @@ public class TabConstants {
        public static final String PLAYER_RESPAWN = "Player Respawn";
        public static final String PLUGIN_MESSAGE = "PluginMessageEvent";
        public static final String REDIS_BUNGEE_MESSAGE = "PubSubMessageEvent";
-        public static final String LUCKPERMS_USER_RECALCULATE_EVENT = "UserDataRecalculateEvent";
-        public static final String LUCKPERMS_GROUP_RECALCULATE_EVENT = "GroupDataRecalculateEvent";
        public static final String VANISH_CHANGE = "Vanish status change";
        public static final String ANTI_OVERRIDE = "Anti override";

@@ -49,8 +48,8 @@ public class TabConstants {
        public static final String RAW_PACKET_OUT = "Packet reading (out)";

        public static final String PLACEHOLDER_REFRESHING = "Refreshing placeholders";
+        public static final String GROUP_REFRESHING = "Refreshing groups";

-        public static final String V1_8_0_BUG_COMPENSATION = "Compensating for 1.8.0 bugs";
        public static final String REFRESHING_NAME_TAG_VISIBILITY = "Refreshing NameTag visibility";
        public static final String SCOREBOARD_PACKET_CHECK = "Checking for other plugins";
        public static final String PROCESSING_PLAYER_MOVEMENT = "Processing player movement";
@@ -78,11 +77,14 @@ public class TabConstants {

        public static final String LAYOUT_FIXED_SLOTS = "Layout (Fixed slots)";
        public static final String LAYOUT_PLAYER_SLOTS = "Layout (Player slots)";
+        public static final String LAYOUT_LATENCY = "Layout (Updating latency)";

        public static final String NAMETAGS_TEAM_REGISTER = "NameTags (Team register)";
        public static final String NAMETAGS_TEAM_UNREGISTER = "NameTags (Team unregister)";
        public static final String NAMETAGS_TEAM_UPDATE = "NameTags (Team update)";

+        public static final String SORTING_CHANGING_TEAM_NAME = "Sorting (Changing team name)";
+
        public static final String SCOREBOARD_TITLE = "Scoreboard (Title)";
        public static final String SCOREBOARD_LINES = "Scoreboard (Lines)";

@@ -116,7 +118,11 @@ public class TabConstants {
        public static final String COMMAND_MYSQL_DOWNLOAD = "tab.mysql.download";
        public static final String COMMAND_MYSQL_UPLOAD = "tab.mysql.upload";
        public static final String COMMAND_NAMETAG_TOGGLE = "tab.nametag.toggle";
+
+        public static final String COMMAND_NAMETAG_TOGGLE_OTHER = "tab.nametag.toggle.other";
        public static final String COMMAND_NAMETAG_PREVIEW = "tab.nametag.preview";
+
+        public static final String COMMAND_NAMETAG_PREVIEW_OTHER = "tab.nametag.preview.other";
        public static final String COMMAND_PARSE = "tab.parse";
        public static final String COMMAND_SCOREBOARD_ANNOUNCE = "tab.announce.scoreboard";
        public static final String COMMAND_SCOREBOARD_TOGGLE = "tab.scoreboard.toggle";
@@ -225,6 +231,7 @@ public class TabConstants {
        public static final String PING_SPOOF = "PingSpoof";
        public static final String SORTING = "sorting";
        public static final String LAYOUT = "layout";
+        public static final String LAYOUT_LATENCY = "layout-latency";
        public static final String NICK_COMPATIBILITY = "nick";
        public static final String PIPELINE_INJECTION = "injection";
        public static final String BOSS_BAR = "BossBar";
@@ -237,6 +244,7 @@ public class TabConstants {
        public static final String UNLIMITED_NAME_TAGS = "NameTagX";
        public static final String UNLIMITED_NAME_TAGS_PACKET_LISTENER = "nametagx-packet";
        public static final String UNLIMITED_NAME_TAGS_VEHICLE_REFRESHER = "nametagx-vehicle";
+        public static final String UNLIMITED_NAME_TAGS_GAMEMODE_LISTENER = "nametagx-gamemode";

        //Bukkit only
        public static final String PER_WORLD_PLAYER_LIST = "PerWorldPlayerList";
@@ -259,6 +267,10 @@ public class TabConstants {
            return "scoreboard-" + line;
        }

+        public static String scoreboardLine(String scoreboard, int index) {
+            return "scoreboard-score-" + scoreboard + "-" + index;
+        }
+
        public static String layout(String name) {
            return "layout-" + name;
        }
@@ -278,9 +290,94 @@ public class TabConstants {
        public static String bossBarColorStyle(String name) {
            return "BossBar-color-style-" + name;
        }
+    }

-        public static String scoreboardLine(String scoreboard, int index) {
-            return "scoreboard-score-" + scoreboard + "-" + index;
+    /**
+     * All internal placeholders offered by the plugin
+     */
+    public static class Placeholder {
+
+        // Universal
+        public static final String DISPLAY_NAME = "%displayname%";
+        public static final String GROUP = "%group%";
+        public static final String VANISHED = "%vanished%";
+        public static final String WORLD = "%world%";
+        public static final String WORLD_ONLINE = "%worldonline%";
+        public static final String SERVER = "%server%";
+        public static final String SERVER_ONLINE = "%serveronline%";
+        public static final String PLAYER = "%player%";
+        public static final String TIME = "%time%";
+        public static final String DATE = "%date%";
+        public static final String PING = "%ping%";
+        public static final String PLAYER_VERSION = "%player-version%";
+        public static final String PLAYER_VERSION_ID = "%player-version-id%";
+        public static final String MEMORY_USED = "%memory-used%";
+        public static final String MEMORY_MAX = "%memory-max%";
+        public static final String MEMORY_USED_GB = "%memory-used-gb%";
+        public static final String MEMORY_MAX_GB = "%memory-max-gb%";
+        public static final String ONLINE = "%online%";
+        public static final String STAFF_ONLINE = "%staffonline%";
+        public static final String NON_STAFF_ONLINE = "%nonstaffonline%";
+        public static final String LUCKPERMS_PREFIX = "%luckperms-prefix%";
+        public static final String LUCKPERMS_SUFFIX = "%luckperms-suffix%";
+        public static final String COUNTDOWN = "%countdown%";
+
+        // Placeholders for internal use
+        public static final String COLLISION = "%collision%";
+        public static final String INVISIBLE = "%invisible%";
+        public static final String VEHICLE = "%vehicle%";
+
+        // Bukkit only
+        public static final String TPS = "%tps%";
+        public static final String MSPT = "%mspt%";
+        public static final String AFK = "%afk%";
+        public static final String ESSENTIALS_NICK = "%essentialsnick%";
+        public static final String VAULT_PREFIX = "%vault-prefix%";
+        public static final String VAULT_SUFFIX = "%vault-suffix%";
+        public static final String HEALTH = "%health%";
+
+        public static final int MINIMUM_REFRESH_INTERVAL = 50;
+
+
+        public static String condition(String name) {
+            return "%condition:" + name + "%";
+        }
+
+        public static String animation(String name) {
+            return "%animation:" + name + "%";
+        }
+
+        public static String globalPlayerListGroup(String group) {
+            return "%playerlist-group_" + group + "%";
        }
    }
+
+    /**
+     * All plugins TAB hooks into
+     */
+    public static class Plugin {
+
+        public static final String LUCKPERMS = "LuckPerms";
+        public static final String VAULT = "Vault";
+        public static final String PLACEHOLDER_API = "PlaceholderAPI";
+        public static final String LIBS_DISGUISES = "LibsDisguises";
+        public static final String VIAVERSION = "ViaVersion";
+        public static final String PROTOCOL_SUPPORT = "ProtocolSupport";
+        public static final String ESSENTIALS = "Essentials";
+        public static final String REDIS_BUNGEE = "RedisBungee";
+        public static final String PREMIUM_VANISH = "PremiumVanish";
+    }
+
+    /**
+     * TAB's custom metrics charts
+     */
+    public static class MetricsChart {
+
+        public static final String PERMISSION_SYSTEM = "permission_system";
+        public static final String GLOBAL_PLAYER_LIST_ENABLED = "global_playerlist_enabled";
+        public static final String PLACEHOLDER_API = "placeholderapi";
+        public static final String SERVER_VERSION = "server_version";
+        public static final String UNLIMITED_NAME_TAG_MODE_ENABLED = "unlimited_nametag_mode_enabled";
+
+    }
 }
@@ -2,42 +2,58 @@ package me.neznamy.tab.api;

 import java.util.*;

+import lombok.Getter;
 import me.neznamy.tab.api.protocol.PacketPlayOutPlayerInfo;
 import me.neznamy.tab.api.protocol.PacketPlayOutScoreboardDisplayObjective;
 import me.neznamy.tab.api.protocol.PacketPlayOutScoreboardObjective;

+/**
+ * Abstract class representing a core feature of the plugin.
+ * <p>
+ * It receives all kinds of events and can react to them.
+ */
 public abstract class TabFeature {

-    private final String featureName;
-    private final String refreshDisplayName;
-    protected final String[] disabledServers;
-    private final boolean serverWhitelistMode;
-    protected final String[] disabledWorlds;
-    private final boolean worldWhitelistMode;
+    /** Feature's name displayed in /tab cpu */
+    @Getter private final String featureName;
+
+    /** Feature's function name displayed in place of refreshing in /tab cpu */
+    @Getter private final String refreshDisplayName;
+
+    /** Servers where the feature is disabled (or enabled if using whitelist mode) */
+    protected String[] disabledServers = new String[0];
+
+    /** Flag tracking whether disabled server list is a whitelist or blacklist */
+    private boolean serverWhitelistMode = false;
+
+    /** Worlds where the feature is disabled (or enabled if using whitelist mode) */
+    protected String[] disabledWorlds = new String[0];
+
+    /** Flag tracking whether disabled world list is a whitelist or blacklist */
+    private boolean worldWhitelistMode = false;
+
+    /** Players located in currently disabled worlds / servers */
    private final Set<TabPlayer> disabledPlayers = Collections.newSetFromMap(new WeakHashMap<>());
+
+    /**
+     * List of methods overridden (implemented) by each feature.
+     * If a method is not overridden, it is not called at all.
+     * This avoids a massive spam for every single method
+     * in every single feature in /tab cpu output
+     */
    private final List<String> methodOverrides = new ArrayList<>();

+    /**
+     * Constructs new instance with given parameters and loads method overrides
+     *
+     * @param   featureName
+     *          Feature's name in /tab cpu
+     * @param   refreshDisplayName
+     *          "refreshing" cpu display type name of the feature
+     */
    protected TabFeature(String featureName, String refreshDisplayName) {
-        this(featureName, refreshDisplayName, null, null);
-    }
-
-    protected TabFeature(String featureName, String refreshDisplayName, List<String> disabledServers, List<String> disabledWorlds) {
        this.featureName = featureName;
        this.refreshDisplayName = refreshDisplayName;
-        if (disabledServers != null) {
-            this.disabledServers = disabledServers.toArray(new String[0]);
-            serverWhitelistMode = disabledServers.contains("WHITELIST");
-        } else {
-            this.disabledServers = new String[0];
-            serverWhitelistMode = false;
-        }
-        if (disabledWorlds != null) {
-            this.disabledWorlds = disabledWorlds.toArray(new String[0]);
-            worldWhitelistMode = disabledWorlds.contains("WHITELIST");
-        } else {
-            this.disabledWorlds = new String[0];
-            worldWhitelistMode = false;
-        }
        try {
            if (getClass().getMethod("onCommand", TabPlayer.class, String.class).getDeclaringClass() != TabFeature.class)
                methodOverrides.add("onCommand");
@@ -49,12 +65,16 @@ public abstract class TabFeature {
                methodOverrides.add("onWorldChange");
            if (getClass().getMethod("onServerChange", TabPlayer.class, String.class, String.class).getDeclaringClass() != TabFeature.class)
                methodOverrides.add("onServerChange");
-            if (getClass().getMethod("onDisplayObjective", TabPlayer.class, PacketPlayOutScoreboardDisplayObjective.class).getDeclaringClass() != TabFeature.class)
+            if (getClass().getMethod("onDisplayObjective", TabPlayer.class, PacketPlayOutScoreboardDisplayObjective.class).getDeclaringClass() != TabFeature.class) {
                methodOverrides.add("onDisplayObjective");
+                TabAPI.getInstance().getFeatureManager().markDisplayObjective();
+            }
            if (getClass().getMethod("onLoginPacket", TabPlayer.class).getDeclaringClass() != TabFeature.class)
                methodOverrides.add("onLoginPacket");
-            if (getClass().getMethod("onObjective", TabPlayer.class, PacketPlayOutScoreboardObjective.class).getDeclaringClass() != TabFeature.class)
+            if (getClass().getMethod("onObjective", TabPlayer.class, PacketPlayOutScoreboardObjective.class).getDeclaringClass() != TabFeature.class) {
                methodOverrides.add("onObjective");
+                TabAPI.getInstance().getFeatureManager().markObjective();
+            }
            if (getClass().getMethod("onPlayerInfo", TabPlayer.class, PacketPlayOutPlayerInfo.class).getDeclaringClass() != TabFeature.class)
                methodOverrides.add("onPlayerInfo");
            if (getClass().getMethod("onPacketReceive", TabPlayer.class, Object.class).getDeclaringClass() != TabFeature.class)
@@ -71,7 +91,34 @@ public abstract class TabFeature {
    }

    /**
-     * Loads all players and sends packets
+     * Constructs new instance with given parameters and loads method overrides.
+     * Also loads lists of disabled worlds and servers of this feature with config
+     * section path specified with {@code configSection} parameter.
+     *
+     * @param   featureName
+     *          Feature's name in /tab cpu
+     * @param   refreshDisplayName
+     *          "refreshing" cpu display type name of the feature
+     * @param   configSection
+     *          Configuration section of the feature to load disabled
+     *          servers / worlds from
+     */
+    protected TabFeature(String featureName, String refreshDisplayName, String configSection) {
+        this(featureName, refreshDisplayName);
+        List<String> disabledServers = TabAPI.getInstance().getConfig().getStringList(configSection + ".disable-in-servers");
+        List<String> disabledWorlds = TabAPI.getInstance().getConfig().getStringList(configSection + ".disable-in-worlds");
+        if (disabledServers != null) {
+            this.disabledServers = disabledServers.toArray(new String[0]);
+            serverWhitelistMode = disabledServers.contains("WHITELIST");
+        }
+        if (disabledWorlds != null) {
+            this.disabledWorlds = disabledWorlds.toArray(new String[0]);
+            worldWhitelistMode = disabledWorlds.contains("WHITELIST");
+        }
+    }
+
+    /**
+     * Loads all online players and sends packets
     */
    public void load() {
        //empty by default
@@ -85,10 +132,13 @@ public abstract class TabFeature {
    }

    /**
-     * Processes command from player
-     * @param sender - command sender
-     * @param message - command line
-     * @return true if event should be cancelled, false if not
+     * Processes command from player. This is typically a toggle command.
+     *
+     * @param   sender
+     *          command sender
+     * @param   message
+     *          command line
+     * @return  {@code true} if event should be cancelled, {@code true} if not
     */
    public boolean onCommand(TabPlayer sender, String message) {
        return false;
@@ -96,7 +146,9 @@ public abstract class TabFeature {

    /**
     * Processes join event
-     * @param connectedPlayer - player who connected
+     *
+     * @param   connectedPlayer
+     *          player who connected
     */
    public void onJoin(TabPlayer connectedPlayer) {
        //empty by default
@@ -104,16 +156,23 @@ public abstract class TabFeature {

    /**
     * Processes quit event
-     * @param disconnectedPlayer - player who disconnected
+     *
+     * @param   disconnectedPlayer
+     *          player who disconnected
     */
    public void onQuit(TabPlayer disconnectedPlayer) {
+        //empty by default
    }

    /**
     * Processes world switch
-     * @param changed - player who switched world
-     * @param from - world player changed from
-     * @param to - world player changed to
+     *
+     * @param   changed
+     *          player who switched world
+     * @param   from
+     *          world player changed from
+     * @param   to
+     *          world player changed to
     */
    public void onWorldChange(TabPlayer changed, String from, String to) {
        //empty by default
@@ -121,9 +180,13 @@ public abstract class TabFeature {

    /**
     * Processes server switch
-     * @param changed - player who switched server
-     * @param from - server player changed from
-     * @param to - server player changed to
+     *
+     * @param   changed
+     *          player who switched server
+     * @param   from
+     *          server player changed from
+     * @param   to
+     *          server player changed to
     */
    public void onServerChange(TabPlayer changed, String from, String to) {
        //empty by default
@@ -131,8 +194,11 @@ public abstract class TabFeature {

    /**
     * Processes the packet send and returns true if packet should be cancelled
-     * @param receiver - player receiving packet
-     * @param packet - received packet
+     *
+     * @param   receiver
+     *          player receiving packet
+     * @param   packet
+     *          received packet
     */
    public void onDisplayObjective(TabPlayer receiver, PacketPlayOutScoreboardDisplayObjective packet) {
        //empty by default
@@ -140,7 +206,9 @@ public abstract class TabFeature {

    /**
     * Processes login packet, only available on BungeeCord
-     * @param packetReceiver - player receiving client reset packet
+     *
+     * @param   packetReceiver
+     *          player receiving client reset packet
     */
    public void onLoginPacket(TabPlayer packetReceiver) {
        //empty by default
@@ -148,8 +216,11 @@ public abstract class TabFeature {

    /**
     * Processes the packet send
-     * @param receiver - player receiving packet
-     * @param packet - received packet
+     *
+     * @param   receiver
+     *          player receiving packet
+     * @param   packet
+     *          received packet
     */
    public void onObjective(TabPlayer receiver, PacketPlayOutScoreboardObjective packet) {
        //empty by default
@@ -157,8 +228,11 @@ public abstract class TabFeature {

    /**
     * Processes the packet send and possibly modifies it
-     * @param receiver - player receiving packet
-     * @param info - received packet
+     *
+     * @param   receiver
+     *          player receiving packet
+     * @param   info
+     *          received packet
     */
    public void onPlayerInfo(TabPlayer receiver, PacketPlayOutPlayerInfo info) {
        //empty by default
@@ -166,11 +240,14 @@ public abstract class TabFeature {

    /**
     * Processes raw packet sent by client
-     * @param sender - packet sender
-     * @param packet - packet received
-     * @return true if false should be cancelled, false if not
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     *
+     * @param   sender
+     *          packet sender
+     * @param   packet
+     *          packet received
+     * @return  true if false should be cancelled, false if not
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public boolean onPacketReceive(TabPlayer sender, Object packet) throws ReflectiveOperationException {
        return false;
@@ -178,10 +255,13 @@ public abstract class TabFeature {

    /**
     * Processes raw packet sent to client
-     * @param receiver - packet receiver
-     * @param packet - the packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     *
+     * @param   receiver
+     *          packet receiver
+     * @param   packet
+     *          the packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public void onPacketSend(TabPlayer receiver, Object packet) throws ReflectiveOperationException {
        //empty by default
@@ -189,20 +269,31 @@ public abstract class TabFeature {

    /**
     * Performs refresh of specified player
-     * @param refreshed - player to refresh
-     * @param force - if refresh should be forced despite refresh seemingly not needed
+     *
+     * @param   refreshed
+     *          player to refresh
+     * @param   force
+     *          if refresh should be forced despite refresh seemingly not needed
     */
    public void refresh(TabPlayer refreshed, boolean force) {
        //empty by default
    }

+    /**
+     * Processes vanish status change of player
+     *
+     * @param   player
+     *          Player who changed vanish status
+     */
    public void onVanishStatusChange(TabPlayer player){
        //empty by default
    }

    /**
     * Registers this feature as one using specified placeholders
-     * @param placeholders - placeholders to add as used in this feature
+     *
+     * @param   placeholders
+     *          placeholders to add as used in this feature
     */
    public void addUsedPlaceholders(Collection<String> placeholders) {
        if (placeholders.isEmpty()) return;
@@ -210,10 +301,13 @@ public abstract class TabFeature {
    }

    /**
-     * Returns true if world or server is disabled, false if not
-     * @param world - world to check
-     * @param server - server to check
-     * @return true if feature should be disabled, false if not
+     * Returns {@code true} if world or server is disabled, {@code false} if not
+     *
+     * @param   server
+     *          server to check
+     * @param   world
+     *          world to check
+     * @return  {@code true} if feature should be disabled, {@code false} if not
     */
    public boolean isDisabled(String server, String world) {
        boolean contains = contains(disabledWorlds, world);
@@ -224,6 +318,17 @@ public abstract class TabFeature {
        return contains;
    }

+    /**
+     * Returns {@code true} if list contains the specified element or element
+     * ends with {@code "*"} and element meeting that requirement is present,
+     * {@code false} otherwise.
+     *
+     * @param   list
+     *          List to check
+     * @param   element
+     *          Element to find
+     * @return  {@code true} if element was found, {@code false} if not
+     */
    protected boolean contains(String[] list, String element) {
        if (element == null) return false;
        for (String s : list) {
@@ -237,31 +342,50 @@ public abstract class TabFeature {
    }

    /**
-     * Returns name of the feature displayed in /tab cpu.
-     * @return name of the feature displayed in /tab cpu
+     * Returns {@code true} if method with specified name is overridden
+     * in the implementation, {@code false} if not
+     *
+     * @param   method
+     *          Method to check
+     * @return  {@code true} if overridden, {@code false} if not
     */
-    public String getFeatureName() {
-        return featureName;
-    }
-
    public boolean overridesMethod(String method) {
        return methodOverrides.contains(method);
    }

+    /**
+     * Returns {@code true} if player is currently located in a server
+     * or world, which is marked as disabled, {@code false} if not
+     *
+     * @param   p
+     *          Player to check
+     * @return  {@code true} if player is in disabled server / world,
+     *          {@code false} if not
+     */
    public boolean isDisabledPlayer(TabPlayer p) {
        return disabledPlayers.contains(p);
    }

+    /**
+     * Adds specified player into list of players in disabled
+     * servers / worlds.
+     *
+     * @param   p
+     *          Player to add
+     */
    public void addDisabledPlayer(TabPlayer p) {
        if (disabledPlayers.contains(p)) return;
        disabledPlayers.add(p);
    }

+    /**
+     * Removes specified player from list of players in disabled
+     * servers / worlds
+     *
+     * @param   p
+     *          Player to check
+     */
    public void removeDisabledPlayer(TabPlayer p) {
        disabledPlayers.remove(p);
    }
-
-    public String getRefreshDisplayName() {
-        return refreshDisplayName;
-    }
 }
@@ -19,225 +19,288 @@ public interface TabPlayer {

    /**
     * Returns player's name
-     * @return Player's name
+     *
+     * @return  Player's name
     */
    String getName();

    /**
     * Returns player's UUID
-     * @return Player's UUID
+     *
+     * @return  Player's UUID
     */
    UUID getUniqueId();

    /**
     * Returns player's uuid used in TabList. This may only be different from real uuid if
     * TAB is installed on velocity with some specific velocity setup
-     * @return player's uuid in TabList
+     *
+     * @return  player's uuid in TabList
     */
    UUID getTablistUUID();

    /**
     * Returns player's protocol version
-     * @return player's protocol version
+     *
+     * @return  player's protocol version
     */
    ProtocolVersion getVersion();

    /**
     * Returns platform-specific entity
-     * @return an instance of bukkit/bungee player depending on platform
+     *
+     * @return  an instance of bukkit/bungee player depending on platform
     */
    Object getPlayer();

    /**
     * Returns player's current world name (on BungeeCord this requires bridge installed)
-     * @return name of world where player is currently in, "N/A" on BungeeCord if bridge is not installed
+     *
+     * @return  name of world where player is currently in, "N/A" on BungeeCord if bridge is not installed
     */
    String getWorld();
    
    /**
     * Returns player's current server name on BungeeCord (on bukkit this returns "N/A")
-     * @return name of server where player is currently in, "N/A" on bukkit
+     *
+     * @return  name of server where player is currently in, "N/A" on bukkit
     */
    String getServer();

    /**
     * Performs platform-specific API call to check for permission and returns the result
-     * @param permission - the permission to check for
-     * @return - true if player has permission, false if not
+     *
+     * @param   permission
+     *          the permission to check for
+     * @return  true if player has permission, false if not
     */
    boolean hasPermission(String permission);

    /**
     * Sends the player a custom universal packet
-     * @param packet - packet to send
+     *
+     * @param   packet
+     *          packet to send
     */
    void sendCustomPacket(TabPacket packet);

    /**
     * Sends the player a custom universal packet and adds that packet into counter that
     * is displayed in /tab cpu
-     * @param packet - packet to send
-     * @param feature - feature to increment sent packet counter of 
+     *
+     * @param   packet
+     *          packet to send
+     * @param   feature
+     *          feature to increment sent packet counter of
     */
    void sendCustomPacket(TabPacket packet, TabFeature feature);
    
    /**
     * Sends the player a custom universal packet and adds that packet into counter that
     * is displayed in /tab cpu
-     * @param packet - packet to send
-     * @param feature - feature to increment sent packet counter of 
+     *
+     * @param   packet
+     *          packet to send
+     * @param   feature
+     *          feature to increment sent packet counter of
     */
    void sendCustomPacket(TabPacket packet, String feature);

    /**
     * Sends the player a platform-specific packet
-     * @param packet - an instance of packet depending on platform
+     *
+     * @param   packet
+     *          an instance of packet depending on platform
     */
    void sendPacket(Object packet);

-    /**
-     * Sends the player a platform-specific packet and adds that packet into counter that
-     * is displayed in /tab cpu
-     * @param packet - an instance of packet depending on platform
-     * @param feature - feature to increment sent packet counter of 
-     */
-    void sendPacket(Object packet, TabFeature feature);
-
-    /**
-     * Sends the player a platform-specific packet and adds that packet into counter that
-     * is displayed in /tab cpu
-     * @param packet - an instance of packet depending on platform
-     * @param feature - feature to increment sent packet counter of
-     */
-    void sendPacket(Object packet, String feature);
-
    /**
     * Returns player's property by name
-     * @param name - name of property
-     * @return the property or null if not found
+     *
+     * @param   name
+     *          name of property
+     * @return  the property or {@code null} if not found
     */
    Property getProperty(String name);

    /**
     * Sends a message to the player
-     * @param message - message to be sent
-     * @param translateColors - whether colors should be translated or not
+     *
+     * @param   message
+     *          message to be sent
+     * @param   translateColors
+     *          whether colors should be translated or not
     */
    void sendMessage(String message, boolean translateColors);

    /**
     * Sends specified component as a chat message
-     * @param message - message to send
+     *
+     * @param   message
+     *          message to send
     */
    void sendMessage(IChatBaseComponent message);

    /**
-     * Returns player's primary permission group
-     * @return player's group depending on configuration
-     */
-    String getGroup();
-
-    /**
-     * Returns player's channel or null if server is 1.7 or older
-     * @return player's channel
+     * Returns player's netty channel. On servers running version 1.7 or older returns {@code null}.
+     *
+     * @return  player's channel
     */
    Channel getChannel();

    /**
     * Returns player's ping calculated by server
-     * @return player's ping
+     *
+     * @return  player's ping
     */
    int getPing();

    /**
     * Returns player's skin data
-     * @return player's skin
+     *
+     * @return  player's skin
     */
    Skin getSkin();

    /**
     * Returns true once the player is successfully loaded (onJoin method ran through all methods)
-     * @return true if player is fully loaded, false otherwise
+     *
+     * @return  {@code true} if player is fully loaded, {@code false} otherwise
     */
    boolean isLoaded();

    /**
     * Sets property with specified name to new value. If property did not exist before, it is
-     * created and true is returned. If it existed, it is overridden and true is returned. False is returned otherwise.
-     * @param feature - feature using this property to get placeholders registered
-     * @param identifier - property name
-     * @param rawValue - new raw value
-     * @return true if value changed / did not exist, false if value did not change
+     * created and {@code true} is returned. If it existed, it is overridden and {@code true} is returned.
+     * {@code false} is returned otherwise.
+     *
+     * @param   feature
+     *          feature using this property to get placeholders registered
+     * @param   identifier
+     *          property name
+     * @param   rawValue
+     *          new raw value
+     * @return  {@code true} if value changed / did not exist, {@code false} if value did not change
     */
    boolean setProperty(TabFeature feature, String identifier, String rawValue);

    /**
     * Loads property from config using standard property loading algorithm
-     * @param property - property name to load
-     * @return true if value did not exist or changed, false otherwise
+     *
+     * @param   property
+     *          property name to load
+     * @return  {@code true} if value did not exist or changed, {@code false} otherwise
     */
    boolean loadPropertyFromConfig(TabFeature feature, String property);

    /**
     * Loads property from config using standard property loading algorithm. If the property is
-     * not set in config, sets it to ifNotSet value
-     * @param property - property name to load
-     * @param ifNotSet - value to use if property is not defined in config
-     * @return true if value did not exist or changed, false otherwise
+     * not set in config, {@code ifNotSet} value is used.
+     *
+     * @param   property
+     *          property name to load
+     * @param   ifNotSet
+     *          value to use if property is not defined in config
+     * @return  {@code true} if value did not exist or changed, {@code false} otherwise
     */
    boolean loadPropertyFromConfig(TabFeature feature, String property, String ifNotSet);

    /**
-     * Returns name of player's scoreboard team or null if NameTag feature is disabled
-     * @return name of player's team
+     * Returns name of player's scoreboard team or {@code null} if NameTag feature is disabled
+     *
+     * @return  name of player's team
     */
    String getTeamName();

    /**
-     * Returns user-friendly explanation of team name
-     * @return explanation behind team name
-     */
-    String getTeamNameNote();
-
-    /**
-     * Returns true if player is disguised using LibsDisguises
-     * @return true if player is disguised, false if not
+     * Returns {@code true} if player is disguised using LibsDisguises, {@code false} if not
+     *
+     * @return  {@code true} if player is disguised, {@code false} if not
     */
    boolean isDisguised();

    /**
-     * Returns true if player has invisibility potion, false if not. For bukkit, API is used, for BungeeCord
-     * bukkit bridge is used
-     * @return true if player has invisibility potion, false if not
+     * Returns {@code true} if player has invisibility potion, {@code false} if not.
+     * For bukkit, API is used, for BungeeCord, bridge is used.
+     *
+     * @return  {@code true} if player has invisibility potion, {@code false} if not
     */
    boolean hasInvisibilityPotion();

    /**
-     * Currently only PV hook on BungeeCord for global PlayerList function. Looking to expand this
-     * in the future
-     * @return true if vanished with PV on BungeeCord
+     * Checks if player is vanished using any supported vanish plugin and returns the result.
+     *
+     * @return  {@code true} if player is vanished, {@code false} if not
     */
    boolean isVanished();

    /**
-     * Returns true if player is online according to server
-     * @return true if online, false if not
+     * Calls platform-specific method and returns the result
+     *
+     * @return  {@code true} if player is online, {@code false} if not
     */
    boolean isOnline();
    
    /**
     * Returns GameMode of the player (0 for survival, 1 creative, 2 adventure, 3 spectator)
-     * @return GameMode of the player
+     *
+     * @return  GameMode of the player
     */
    int getGamemode();
-    
+
+    /**
+     * Returns {@code true} if this is a bedrock player, {@code false} if not
+     *
+     * @return  {@code true} if player is a bedrock player, {@code false} if not
+     */
    boolean isBedrockPlayer();

+    /**
+     * Returns player's primary permission group. If group has been changed using
+     * {@link #setTemporaryGroup(String)}, returns that value. Otherwise, returns group
+     * detected by standard group assign logic
+     *
+     * @return  player's primary permission group
+     */
+    String getGroup();
+
+    /**
+     * Temporarily overrides player's group and applies all changes coming from new group.
+     * This includes all properties and sorting, if used.
+     *
+     * @param   group
+     *          New group to use
+     * @see     #hasTemporaryGroup()
+     * @see     #resetTemporaryGroup()
+     */
    void setTemporaryGroup(String group);

+    /**
+     * Returns temporary group applied to the player using {@link #setTemporaryGroup(String)}.
+     * If no group was set, returns {@code null}
+     *
+     * @return  Temporary group assigned to player or {@code null} if not set
+     * @see     #setTemporaryGroup(String)
+     * @see     #resetTemporaryGroup()
+     */
    boolean hasTemporaryGroup();

+    /**
+     * Resets temporary group assigned using {@link #setTemporaryGroup(String)}.
+     * If no temporary group is set, doesn't do anything.
+     *
+     * @see     #setTemporaryGroup(String)
+     * @see     #hasTemporaryGroup()
+     */
    void resetTemporaryGroup();

+    /**
+     * Returns player's game profile name as seen by other players. By default,
+     * this returns player's name. If using a nickname / disguise plugin that changes
+     * game profile name for other players and change was successfully detected, returns
+     * that value.
+     *
+     * @return  player's game profile name as seen by other players
+     */
    String getNickname();
 }
@@ -1,29 +1,168 @@
 package me.neznamy.tab.api;

+/**
+ * An interface allowing to modify tablist display names
+ * of players.
+ * <p>
+ * Instance can be obtained using {@link TabAPI#getTablistFormatManager()}.
+ * This requires the feature to be enabled in config, otherwise the method will
+ * return {@code null}.
+ */
 public interface TablistFormatManager {

+    /**
+     * Changes player's prefix to provided value. Supports placeholders,
+     * as well as any supported RGB formats.
+     *
+     * @param   player
+     *          player to change prefix of
+     * @param   prefix
+     *          new prefix value
+     * @see     #resetPrefix(TabPlayer)
+     * @see     #getCustomPrefix(TabPlayer)
+     * @see     #getOriginalPrefix(TabPlayer)
+     */
    void setPrefix(TabPlayer player, String prefix);
-    
+
+    /**
+     * Changes player's name to provided value. Supports placeholders,
+     * as well as any supported RGB formats.
+     *
+     * @param   player
+     *          player to change prefix of
+     * @param   customName
+     *          new customName value
+     * @see     #resetName(TabPlayer)
+     * @see     #getCustomName(TabPlayer)
+     * @see     #getOriginalName(TabPlayer)
+     */
    void setName(TabPlayer player, String customName);
-    
+
+    /**
+     * Changes player's suffix to provided value. Supports placeholders,
+     * as well as any supported RGB formats.
+     *
+     * @param   player
+     *          player to change prefix of
+     * @param   suffix
+     *          new suffix value
+     * @see     #resetSuffix(TabPlayer)
+     * @see     #getCustomSuffix(TabPlayer)
+     * @see     #getOriginalSuffix(TabPlayer)
+     */
    void setSuffix(TabPlayer player, String suffix);
-    
+
+    /**
+     * Resets player's prefix previously assigned using {@link #setPrefix(TabPlayer, String)}
+     * method. If nothing was set, this method will not do anything.
+     *
+     * @param   player
+     *          player to reset prefix of
+     * @see     #setPrefix(TabPlayer, String)
+     * @see     #getCustomPrefix(TabPlayer)
+     * @see     #getOriginalPrefix(TabPlayer)
+     */
    void resetPrefix(TabPlayer player);
-    
+
+    /**
+     * Resets player's custom name previously assigned using {@link #setName(TabPlayer, String)}
+     * method. If nothing was set, this method will not do anything.
+     *
+     * @param   player
+     *          player to reset name of
+     * @see     #setName(TabPlayer, String)
+     * @see     #getCustomName(TabPlayer)
+     * @see     #getOriginalName(TabPlayer)
+     */
    void resetName(TabPlayer player);
-    
+
+    /**
+     * Resets player's suffix previously assigned using {@link #setSuffix(TabPlayer, String)}
+     * method. If nothing was set, this method will not do anything.
+     *
+     * @param   player
+     *          player to reset suffix of
+     * @see     #setSuffix(TabPlayer, String)
+     * @see     #getCustomSuffix(TabPlayer)
+     * @see     #getOriginalSuffix(TabPlayer)
+     */
    void resetSuffix(TabPlayer player);
-    
+
+    /**
+     * Returns prefix assigned using {@link #setPrefix(TabPlayer, String)} method.
+     * If the method was not used, {@code null} is returned.
+     *
+     * @param   player
+     *          player to get custom prefix of
+     * @return  player's custom prefix or {@code null} if not defined
+     * @see     #setPrefix(TabPlayer, String)
+     * @see     #resetPrefix(TabPlayer)
+     * @see     #getOriginalPrefix(TabPlayer)
+     */
    String getCustomPrefix(TabPlayer player);
-    
+
+    /**
+     * Returns custom name assigned using {@link #setName(TabPlayer, String)} method.
+     * If the method was not used, {@code null} is returned.
+     *
+     * @param   player
+     *          player to get custom name of
+     * @return  player's custom name or {@code null} if not defined
+     * @see     #setName(TabPlayer, String)
+     * @see     #resetName(TabPlayer)
+     * @see     #getOriginalName(TabPlayer)
+     */
    String getCustomName(TabPlayer player);
-    
+
+    /**
+     * Returns suffix assigned using {@link #setSuffix(TabPlayer, String)} method.
+     * If the method was not used, {@code null} is returned.
+     *
+     * @param   player
+     *          player to get custom suffix of
+     * @return  player's custom suffix or {@code null} if not defined
+     * @see     #setSuffix(TabPlayer, String)
+     * @see     #resetSuffix(TabPlayer)
+     * @see     #getOriginalSuffix(TabPlayer)
+     */
    String getCustomSuffix(TabPlayer player);
-    
+
+    /**
+     * Returns player's original prefix applied using plugin's internal logic.
+     * This value is not affected by API calls in any way.
+     *
+     * @param   player
+     *          player to get original prefix of
+     * @return  player's original prefix
+     * @see     #setPrefix(TabPlayer, String)
+     * @see     #resetPrefix(TabPlayer)
+     * @see     #getCustomPrefix(TabPlayer)
+     */
    String getOriginalPrefix(TabPlayer player);
-    
+
+    /**
+     * Returns player's original name applied using plugin's internal logic.
+     * This value is not affected by API calls in any way.
+     *
+     * @param   player
+     *          player to get original name of
+     * @return  player's original name
+     * @see     #setName(TabPlayer, String)
+     * @see     #resetName(TabPlayer)
+     * @see     #getCustomName(TabPlayer)
+     */
    String getOriginalName(TabPlayer player);
-    
+
+    /**
+     * Returns player's original suffix applied using plugin's internal logic.
+     * This value is not affected by API calls in any way.
+     *
+     * @param   player
+     *          player to get original suffix of
+     * @return  player's original suffix
+     * @see     #setSuffix(TabPlayer, String)
+     * @see     #resetSuffix(TabPlayer)
+     * @see     #getCustomSuffix(TabPlayer)
+     */
    String getOriginalSuffix(TabPlayer player);
-    
 }
@@ -1,10 +1,14 @@
 package me.neznamy.tab.api.bossbar;

+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
 /**
 * An enum representing all available BossBar styles.
 * Calling ordinal() will return style's network ID.
 * Style names are equal to NMS names.
 */
+@AllArgsConstructor
 public enum BarStyle {

    PROGRESS("SOLID"),
@@ -14,23 +18,5 @@ public enum BarStyle {
    NOTCHED_20("SEGMENTED_20");

    /** Style's name used in Bukkit API */
-    private final String bukkitName;
-
-    /**
-     * Initializes enum constant with given bukkit name
-     *
-     * @param     bukkitName
-     *             Name of color to be returned in {@code getBukkitName()}
-     */
-    BarStyle(String bukkitName){
-        this.bukkitName = bukkitName;
-    }
-
-    /**
-     * Returns name of this style in Bukkit API
-     * @return    name of this style in Bukkit API
-     */
-    public String getBukkitName() {
-        return bukkitName;
-    }
+    @Getter private final String bukkitName;
 }
@@ -23,14 +23,16 @@ public interface BossBar {
     * Returns name of this BossBar. If it was defined in config, returns
     * the name specified in config. If it was made using the API, returns
     * randomly generated ID given to this BossBar when creating.
-     * @return    name of BossBar
+     *
+     * @return  name of BossBar
     */
    String getName();

    /**
     * Returns randomly generated uuid of this BossBar used internally to match
     * the BossBar in client with packets or with Bukkit API BossBar instances.
-     * @return    uuid of this BossBar
+     *
+     * @return  uuid of this BossBar
     */
    UUID getUniqueId();

@@ -43,8 +45,8 @@ public interface BossBar {
     * <p>
     * If specified title is equal to the current one, nothing happens.
     *
-     * @param    title
-     *             New title to display in this BossBar
+     * @param   title
+     *          New title to display in this BossBar
     */
    void setTitle(String title);

@@ -59,8 +61,8 @@ public interface BossBar {
     * <p>
     * If specified progress is equal to the current one, nothing happens.
     *
-     * @param    progress
-     *             New progress to use in this BossBar
+     * @param   progress
+     *          New progress to use in this BossBar
     */
    void setProgress(String progress);

@@ -68,8 +70,9 @@ public interface BossBar {
     * Changes BossBar progress to specified value ranging from 0 to 100.
     * <p>
     * If specified progress is equal to the current one, nothing happens.
-     * @param    progress
-     *             New progress to use in this BossBar
+     *
+     * @param   progress
+     *          New progress to use in this BossBar
     */
    void setProgress(float progress);

@@ -84,8 +87,8 @@ public interface BossBar {
     * <p>
     * If specified color is equal to the current one, nothing happens.
     *
-     * @param    color
-     *             New color to use in this BossBar
+     * @param   color
+     *          New color to use in this BossBar
     */
    void setColor(String color);

@@ -94,8 +97,8 @@ public interface BossBar {
     * <p>
     * If specified color is equal to the current one, nothing happens.
     *
-     * @param    color
-     *             New color to use in this BossBar
+     * @param   color
+     *          New color to use in this BossBar
     */
    void setColor(BarColor color);

@@ -110,8 +113,8 @@ public interface BossBar {
     * <p>
     * If specified style is equal to the current one, nothing happens.
     *
-     * @param    style
-     *             New style to use in this BossBar
+     * @param   style
+     *          New style to use in this BossBar
     */
    void setStyle(String style);

@@ -120,36 +123,40 @@ public interface BossBar {
     * <p>
     * If specified style is equal to the current one, nothing happens.
     *
-     * @param    style
-     *             New style to use in this BossBar
+     * @param   style
+     *          New style to use in this BossBar
     */
    void setStyle(BarStyle style);

    /**
     * Returns current title of the BossBar in raw format. If it contains placeholders,
     * their raw identifiers are used in the result.
-     * @return    title of the BossBar
+     *
+     * @return  title of the BossBar
     */
    String getTitle();

    /**
     * Returns progress of the BossBar as a string, which is either entered string
     * containing placeholders or entered number converted to string
-     * @return    entered progress as a string
+     *
+     * @return  entered progress as a string
     */
    String getProgress();

    /**
     * Returns color of the BossBar as a string, which is either entered string
     * containing placeholders or entered enum value converted to string
-     * @return    entered color as a string
+     *
+     * @return  entered color as a string
     */
    String getColor();

    /**
     * Returns style of the BossBar as a string, which is either entered string
     * containing placeholders or entered enum value converted to string
-     * @return    entered style as a string
+     *
+     * @return  entered style as a string
     */
    String getStyle();

@@ -158,8 +165,8 @@ public interface BossBar {
     * <p>
     * If the player already sees this BossBar, nothing happens.
     *
-     * @param    player
-     *             Player to register this BossBar to
+     * @param   player
+     *          Player to register this BossBar to
     */
    void addPlayer(TabPlayer player);

@@ -168,8 +175,8 @@ public interface BossBar {
     * <p>
     * If the player does not see this BossBar, nothing happens.
     *
-     * @param    player
-     *             Player to unregister this BossBar from
+     * @param   player
+     *          Player to unregister this BossBar from
     */
    void removePlayer(TabPlayer player);

@@ -179,15 +186,25 @@ public interface BossBar {
     * The returned list can only be used to read. Writing
     * will not work properly. For adding/removing players see {@link #addPlayer(TabPlayer)}
     * and {@link #removePlayer(TabPlayer)}.
-     * @return    List of players seeing this BossBar
+     *
+     * @return  List of players seeing this BossBar
     */
    List<TabPlayer> getPlayers();

    /**
     * Returns {@code true} if specified player can see this BossBar, {@code false} if not
-     * @param    player
-     *             Player to check for
-     * @return    {@code true} if contains, {@code false} if not
+     *
+     * @param   player
+     *          Player to check for
+     * @return  {@code true} if contains, {@code false} if not
     */
    boolean containsPlayer(TabPlayer player);
+
+    /**
+     * Returns {@code true} if this bossbar in configured as announcement-only bar,
+     * {@code false} if not.
+     *
+     * @return  {@code true} if bar is announcement only, {@code false} if not
+     */
+    boolean isAnnouncementBar();
 }
@@ -4,15 +4,16 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;

+import me.neznamy.tab.api.TabAPI;
 import me.neznamy.tab.api.TabPlayer;

 /**
 * An interface allowing work with BossBars such as creating, sending
 * and toggling.
 * <p>
- * Instance can be obtained using {@link me.neznamy.tab.api.TabAPI#getBossBarManager()}.
+ * Instance can be obtained using {@link TabAPI#getBossBarManager()}.
 * This requires the BossBar feature to be enabled in config, otherwise the method will
- * return null.
+ * return {@code null}.
 */
 public interface BossBarManager {

@@ -20,18 +21,15 @@ public interface BossBarManager {
     * Creates BossBar with specified parameters and registers it to BossBar manager,
     * allowing to retrieve it later.
     * 
-     * @param    title
-     *             Title to display, supports placeholders
-     * 
-     * @param    progress
-     *             Progress to use. Must be between 0 and 100
-     * 
-     * @param    color
-     *             Color to use
-     * 
-     * @param    style
-     *             Style to use
-     * @return    The newly created BossBar
+     * @param   title
+     *          Title to display, supports placeholders
+     * @param   progress
+     *          Progress to use. Must be between 0 and 100
+     * @param   color
+     *          Color to use
+     * @param   style
+     *          Style to use
+     * @return  The newly created BossBar
     */
    BossBar createBossBar(String title, float progress, BarColor color, BarStyle style);

@@ -39,21 +37,18 @@ public interface BossBarManager {
     * Creates BossBar with specified parameters and registers it to BossBar manager,
     * allowing to retrieve it later.
     * 
-     * @param    title
-     *             Title to display, supports placeholders
-     * 
-     * @param    progress
-     *             Progress to use. Must be a string version of a number, or
-     *             a placeholder that returns a number
-     * 
-     * @param    color
-     *             Color to use. Must be a string version of one of enum constants, or
-     *             a placeholder that returns one of them
-     * 
-     * @param    style
-     *             Style to use. Must be a string version of one of enum constants, or
-     *             a placeholder that returns one of them
-     * @return    The newly created BossBar
+     * @param   title
+     *          Title to display, supports placeholders
+     * @param   progress
+     *          Progress to use. Must be a string version of a number, or
+     *          a placeholder that returns a number
+     * @param   color
+     *          Color to use. Must be a string version of one of enum constants, or
+     *          a placeholder that returns one of them
+     * @param   style
+     *          Style to use. Must be a string version of one of enum constants, or
+     *          a placeholder that returns one of them
+     * @return  The newly created BossBar
     */
    BossBar createBossBar(String title, String progress, String color, String style);

@@ -63,9 +58,9 @@ public interface BossBarManager {
     * retrieved using {@link me.neznamy.tab.api.bossbar.BossBar#getName()}.
     * Returns null if no such BossBar exists.
     * 
-     * @param    name
-     *             Name of registered BossBar
-     * @return    BossBar with specified name
+     * @param   name
+     *          Name of registered BossBar
+     * @return  BossBar with specified name
     */
    BossBar getBossBar(String name);

@@ -74,9 +69,9 @@ public interface BossBarManager {
     * BossBar is created and used in packets / to match which the one from Bukkit API.
     * Returns null if no such BossBar exists.
     * 
-     * @param    id
-     *             UUID to return BossBar by
-     * @return    BossBar with specified uuid
+     * @param   id
+     *          UUID to return BossBar by
+     * @return  BossBar with specified uuid
     */
    BossBar getBossBar(UUID id);

@@ -86,31 +81,31 @@ public interface BossBarManager {
     * <p>
     * Map key is BossBar's name available in {@link me.neznamy.tab.api.bossbar.BossBar#getName()},
     * map value is the BossBar interface.
-     * @return    all registered BossBars
+     *
+     * @return  all registered BossBars
     */
    Map<String, BossBar> getRegisteredBossBars();

    /**
     * Toggles BossBar for this player and sends toggle message if {@code sendToggleMessage} is true.
     * 
-     * @param    player
-     *             Player to toggle BossBar for
-     * 
-     * @param    sendToggleMessage
-     *             {@code true} if toggle message should be sent, {@code false} if not
-     * @see #hasBossBarVisible(TabPlayer)
-     * @see #setBossBarVisible(TabPlayer, boolean, boolean)
+     * @param   player
+     *          Player to toggle BossBar for
+     * @param   sendToggleMessage
+     *          {@code true} if toggle message should be sent, {@code false} if not
+     * @see     #hasBossBarVisible(TabPlayer)
+     * @see     #setBossBarVisible(TabPlayer, boolean, boolean)
     */
    void toggleBossBar(TabPlayer player, boolean sendToggleMessage);

    /**
     * Returns true if player can see BossBars, false if toggled via command or API.
     * 
-     * @param    player
-     *             Player to check toggle status of
-     * @return    {@code true} if visible, {@code false} if disabled (toggled)
-     * @see #toggleBossBar(TabPlayer, boolean)
-     * @see #setBossBarVisible(TabPlayer, boolean, boolean)
+     * @param   player
+     *          Player to check toggle status of
+     * @return  {@code true} if visible, {@code false} if disabled (toggled)
+     * @see     #toggleBossBar(TabPlayer, boolean)
+     * @see     #setBossBarVisible(TabPlayer, boolean, boolean)
     */
    boolean hasBossBarVisible(TabPlayer player);

@@ -118,12 +113,12 @@ public interface BossBarManager {
     * Sets BossBar visibility of player to set value. If value did not change, nothing happens.
     * If visibility changed, toggle message is sent if {@code sendToggleMessage} is {@code true}.
     * 
-     * @param    player
-     *             Player to set BossBar visibility of
-     * @param    visible
-     *             {@code true} if BossBar should be visible, {@code false} if not
-     * @param    sendToggleMessage
-     *             {@code true} if toggle message should be sent if value changed, {@code false} if not
+     * @param   player
+     *          Player to set BossBar visibility of
+     * @param   visible
+     *          {@code true} if BossBar should be visible, {@code false} if not
+     * @param   sendToggleMessage
+     *          {@code true} if toggle message should be sent if value changed, {@code false} if not
     * @see #toggleBossBar(TabPlayer, boolean)
     * @see #hasBossBarVisible(TabPlayer)
     */
@@ -131,37 +126,40 @@ public interface BossBarManager {

    /**
     * Temporarily displays registered BossBar to player for specified amount of time in milliseconds.
-     * @param    player
-     *             Player to show BossBar to
-     * @param    bossBar
-     *             Name of registered BossBar to show
-     * @param    duration
-     *             In milliseconds for how long should BossBar be displayed
-     * @throws    IllegalArgumentException
-     *             if no BossBar with specified name exists
-     * @see #announceBossBar(String, int)
-     * @see #getAnnouncedBossBars()
+     *
+     * @param   player
+     *          Player to show BossBar to
+     * @param   bossBar
+     *          Name of registered BossBar to show
+     * @param   duration
+     *          In milliseconds for how long should BossBar be displayed
+     * @throws  IllegalArgumentException
+     *          if no BossBar with specified name exists
+     * @see     #announceBossBar(String, int)
+     * @see     #getAnnouncedBossBars()
     */
    void sendBossBarTemporarily(TabPlayer player, String bossBar, int duration);

    /**
     * Temporarily displays registered BossBar to all players for specified amount of time in milliseconds.
-     * @param    bossBar
-     *             Name of registered BossBar to show
-     * @param    duration
-     *             In milliseconds for how long should BossBar be displayed
-     * @throws    IllegalArgumentException
-     *             if no BossBar with specified name exists
-     * @see #sendBossBarTemporarily(TabPlayer, String, int)
-     * @see #getAnnouncedBossBars()
+     *
+     * @param   bossBar
+     *          Name of registered BossBar to show
+     * @param   duration
+     *          In milliseconds for how long should BossBar be displayed
+     * @throws  IllegalArgumentException
+     *          if no BossBar with specified name exists
+     * @see     #sendBossBarTemporarily(TabPlayer, String, int)
+     * @see     #getAnnouncedBossBars()
     */
    void announceBossBar(String bossBar, int duration);

    /**
     * Returns list of BossBars which are currently being announced.
-     * @return    list of currently active BossBar announcements
-     * @see #sendBossBarTemporarily(TabPlayer, String, int)
-     * @see #announceBossBar(String, int)
+     *
+     * @return  list of currently active BossBar announcements
+     * @see     #sendBossBarTemporarily(TabPlayer, String, int)
+     * @see     #announceBossBar(String, int)
     */
    List<BossBar> getAnnouncedBossBars();
 }
@@ -1,49 +1,19 @@
 package me.neznamy.tab.api.chat;

-import me.neznamy.tab.api.util.Preconditions;
+import lombok.Data;
+import lombok.NonNull;

 /**
 * Class for click event action in chat component
 */
+@Data
 public class ChatClickable {

    /** Click action */
-    private final EnumClickAction action;
+    @NonNull private final EnumClickAction action;

    /** Click value */
-    private final String value;
-
-    /**
-     * Constructs new instance with given action and value.
-     * @param    action
-     *             click event action
-     * @param    value
-     *             click event value
-     * @throws    IllegalArgumentException
-     *             if {@code action} is null or {@code value} is null
-     */
-    public ChatClickable(EnumClickAction action, String value) {
-        Preconditions.checkNotNull(action, "hover action");
-        Preconditions.checkNotNull(value, "hover value");
-        this.action = action;
-        this.value = value;
-    }
-
-    /**
-     * Returns click action defined in constructor
-     * @return    click action
-     */
-    public EnumClickAction getAction() {
-        return action;
-    }
-
-    /**
-     * Returns click action defined in constructor
-     * @return    click action
-     */
-    public String getValue() {
-        return value;
-    }
+    @NonNull private final String value;

    /**
     * Enum for all possible click actions
@@ -1,22 +1,22 @@
 package me.neznamy.tab.api.chat;

+import lombok.NonNull;
+import me.neznamy.tab.api.TabAPI;
+
 import java.util.UUID;

-import com.google.gson.JsonObject;
-import me.neznamy.tab.api.util.Preconditions;
-
 public class ChatComponentEntity extends IChatBaseComponent {

-    private final String type;
-    private final UUID id;
-    private final String name;
-    
-    public ChatComponentEntity(String type, UUID id, String name) {
-        Preconditions.checkNotNull(type, "type");
-        Preconditions.checkNotNull(id, "id");
-        this.type = type;
-        this.id = id;
-        this.name = name;
+    private final String CONTENTS;
+    private final String VALUE_1_13;
+    private final String VALUE_1_12;
+    private final String VALUE_1_8;
+
+    public ChatComponentEntity(@NonNull String type, @NonNull UUID id, String name) {
+        this.CONTENTS = String.format("{\"type\":\"%s\",\"id\":\"%s\",\"name\":{\"text\":\"%s\"}}", type, id, name);
+        this.VALUE_1_13 = String.format("{type:\"%s\",id:\"%s\",name:\"{\\\"text\\\":\\\"%s\\\"}\"}", type, id, name);
+        this.VALUE_1_12 = String.format("{type:\"%s\",id:\"%s\",name:\"%s\"}", type, id, name);
+        this.VALUE_1_8 = String.format("{type:%s,id:%s,name:%s}", type, id, name);
    }

    @Override
@@ -26,16 +26,10 @@ public class ChatComponentEntity extends IChatBaseComponent {
    
    @Override
    public String toString() {
-        return String.format("{\"type\":\"%s\",\"id\":\"%s\",\"name\":{\"text\":\"%s\"}}", type, id, name);
-    }
-    
-    public JsonObject toJson() {
-        JsonObject json = new JsonObject();
-        json.addProperty("type", type);
-        json.addProperty("id", id.toString());
-        JsonObject json2 = new JsonObject();
-        json2.addProperty("text", name);
-        json.add("name", json2);
-        return json;
+        if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 16) return CONTENTS;
+        if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 13) return VALUE_1_13;
+        if (TabAPI.getInstance().getServerVersion().getMinorVersion() == 12) return VALUE_1_12;
+        if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 8) return VALUE_1_8;
+        throw new IllegalStateException("show_entity hover action is not supported on <1.8");
    }
 }
@@ -1,57 +1,32 @@
 package me.neznamy.tab.api.chat;

-import me.neznamy.tab.api.util.Preconditions;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.Getter;
+import lombok.NonNull;

 /**
 * Class for hover event action in chat component
 */
+@Data
 public class ChatHoverable {

    /** Hover action */
-    private final EnumHoverAction action;
+    @NonNull private final EnumHoverAction action;

    /** Hover value */
-    private final IChatBaseComponent value;
-
-    /**
-     * Constructs new instance with given action and value.
-     * @param    action
-     *             hover event action
-     * @param    value
-     *             hover event value
-     * @throws    IllegalArgumentException
-     *             if {@code action} is null or {@code value} is null
-     */
-    public ChatHoverable(EnumHoverAction action, IChatBaseComponent value) {
-        Preconditions.checkNotNull(action, "hover action");
-        Preconditions.checkNotNull(value, "hover value");
-        this.action = action;
-        this.value = value;
-    }
-
-    /**
-     * Returns hover action defined in constructor
-     * @return    hover action
-     */
-    public EnumHoverAction getAction() {
-        return action;
-    }
-
-    /**
-     * Returns hover value defined in constructor
-     * @return    hover value
-     */
-    public IChatBaseComponent getValue() {
-        return value;
-    }
+    @NonNull private final IChatBaseComponent value;

    /**
     * Enum for all possible hover actions
     */
+    @AllArgsConstructor
    public enum EnumHoverAction {

-        SHOW_TEXT,
-        SHOW_ITEM,
-        SHOW_ENTITY
+        SHOW_TEXT("contents"),
+        SHOW_ITEM("value"),
+        SHOW_ENTITY("contents");
+
+        @Getter private final String preferredKey;
    }
 }
@@ -1,37 +1,31 @@
 package me.neznamy.tab.api.chat;

-import java.util.UUID;
-
-import me.neznamy.tab.api.util.Preconditions;
-import org.json.simple.JSONObject;
-
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.NonNull;
 import me.neznamy.tab.api.ProtocolVersion;
 import me.neznamy.tab.api.TabAPI;
 import me.neznamy.tab.api.chat.ChatClickable.EnumClickAction;
 import me.neznamy.tab.api.chat.ChatHoverable.EnumHoverAction;
+import org.json.simple.JSONObject;

+import java.util.UUID;
+
+@Data @NoArgsConstructor
 public class ChatModifier {

    private TextColor color;
-
    private Boolean bold;
    private Boolean italic;
    private Boolean underlined;
    private Boolean strikethrough;
    private Boolean obfuscated;
-
    private ChatClickable clickEvent;
    private ChatHoverable hoverEvent;
-
    private String font;
-
    private ProtocolVersion targetVersion;

-    public ChatModifier() {
-    }
-
-    public ChatModifier(ChatModifier modifier) {
-        Preconditions.checkNotNull(modifier, "modifier");
+    public ChatModifier(@NonNull ChatModifier modifier) {
        this.color = modifier.color == null ? null : new TextColor(modifier.color);
        this.bold = modifier.bold;
        this.italic = modifier.italic;
@@ -44,57 +38,11 @@ public class ChatModifier {
        this.targetVersion = modifier.targetVersion;
    }

-    public TextColor getColor() {
-        return color;
-    }
-
-    public void setColor(TextColor color) {
-        this.color = color;
-    }
-
-    public Boolean getBold() {
-        return bold;
-    }
-
-    public void setBold(Boolean bold) {
-        this.bold = bold;
-    }
-
-    public Boolean getItalic() {
-        return italic;
-    }
-
-    public void setItalic(Boolean italic) {
-        this.italic = italic;
-    }
-
-    public Boolean getUnderlined() {
-        return underlined;
-    }
-
-    public void setUnderlined(Boolean underlined) {
-        this.underlined = underlined;
-    }
-
-    public Boolean getStrikethrough() {
-        return strikethrough;
-    }
-
-    public void setStrikethrough(Boolean strikethrough) {
-        this.strikethrough = strikethrough;
-    }
-
-    public Boolean getObfuscated() {
-        return obfuscated;
-    }
-
-    public void setObfuscated(Boolean obfuscated) {
-        this.obfuscated = obfuscated;
-    }

    /**
     * Returns true if bold is defined and set to true, false otherwise
-     * @return true if bold is defined and set to true, false otherwise
+     *
+     * @return  true if bold is defined and set to true, false otherwise
     */
    public boolean isBold(){
        return Boolean.TRUE.equals(bold);
@@ -102,7 +50,8 @@ public class ChatModifier {

    /**
     * Returns true if italic is defined and set to true, false otherwise
-     * @return true if italic is defined and set to true, false otherwise
+     *
+     * @return  true if italic is defined and set to true, false otherwise
     */
    public boolean isItalic(){
        return Boolean.TRUE.equals(italic);
@@ -110,7 +59,8 @@ public class ChatModifier {

    /**
     * Returns true if underlined is defined and set to true, false otherwise
-     * @return true if underlined is defined and set to true, false otherwise
+     *
+     * @return  true if underlined is defined and set to true, false otherwise
     */
    public boolean isUnderlined(){
        return Boolean.TRUE.equals(underlined);
@@ -118,7 +68,8 @@ public class ChatModifier {

    /**
     * Returns true if strikethrough is defined and set to true, false otherwise
-     * @return true if strikethrough is defined and set to true, false otherwise
+     *
+     * @return  true if strikethrough is defined and set to true, false otherwise
     */
    public boolean isStrikethrough(){
        return Boolean.TRUE.equals(strikethrough);
@@ -126,58 +77,48 @@ public class ChatModifier {

    /**
     * Returns true if obfuscation is defined and set to true, false otherwise
-     * @return true if obfuscation is defined and set to true, false otherwise
+     *
+     * @return  true if obfuscation is defined and set to true, false otherwise
     */
    public boolean isObfuscated(){
        return Boolean.TRUE.equals(obfuscated);
    }

-    public ChatClickable getClickEvent() {
-        return clickEvent;
-    }
-
-    public void setClickEvent(ChatClickable clickEvent) {
-        this.clickEvent = clickEvent;
-    }
-
-    public ChatHoverable getHoverEvent() {
-        return hoverEvent;
-    }
-
-    public void setHoverEvent(ChatHoverable hoverEvent) {
-        this.hoverEvent = hoverEvent;
-    }
-
    /**
     * Sets click action to OPEN_URL and url to given value
-     * @param url - url to open
+     *
+     * @param   url
+     *          url to open
     */
-    public void onClickOpenUrl(String url) {
-        Preconditions.checkNotNull(url, "url");
+    public void onClickOpenUrl(@NonNull String url) {
        clickEvent = new ChatClickable(EnumClickAction.OPEN_URL, url);
    }

    /**
     * Sets click action to RUN_COMMAND and command to given value
-     * @param command - command to perform, might be without / to send a chat message
+     *
+     * @param   command
+     *          command to perform, might be without / to send a chat message
     */
-    public void onClickRunCommand(String command) {
-        Preconditions.checkNotNull(command, "command");
+    public void onClickRunCommand(@NonNull String command) {
        clickEvent = new ChatClickable(EnumClickAction.RUN_COMMAND, command);
    }

    /**
     * Sets click action to SUGGEST_COMMAND and command to given value
-     * @param command - command to suggest
+     *
+     * @param   command
+     *          command to suggest
     */
-    public void onClickSuggestCommand(String command) {
-        Preconditions.checkNotNull(command, "command");
+    public void onClickSuggestCommand(@NonNull String command) {
        clickEvent = new ChatClickable(EnumClickAction.SUGGEST_COMMAND, command);
    }

    /**
     * Sets click action to CHANGE_PAGE and page id to given value
-     * @param newPage - id of new page
+     *
+     * @param   newPage
+     *          id of new page
     */
    public void onClickChangePage(int newPage) {
        if (TabAPI.getInstance().getServerVersion().getMinorVersion() < 8) throw new UnsupportedOperationException("change_page click action is not supported on <1.8");
@@ -186,73 +127,56 @@ public class ChatModifier {

    /**
     * Sets click action to COPY_TO_CLIPBOARD and text to provided value
-     * @param text - text to copy to clipboard on click
+     *
+     * @param   text
+     *          text to copy to clipboard on click
     */
-    public void onClickCopyToClipBoard(String text) {
-        Preconditions.checkNotNull(text, "text");
+    public void onClickCopyToClipBoard(@NonNull String text) {
        clickEvent = new ChatClickable(EnumClickAction.COPY_TO_CLIPBOARD, text);
    }

-    public void onClick(EnumClickAction action, String value) {
-        Preconditions.checkNotNull(action, "action");
-        Preconditions.checkNotNull(value, "value");
+    public void onClick(@NonNull EnumClickAction action, @NonNull String value) {
        clickEvent = new ChatClickable(action, value);
    }

    /**
     * Sets hover action to SHOW_TEXT and text to given value
-     * @param text - text to show
+     *
+     * @param   text
+     *          text to show
     */
-    public void onHoverShowText(IChatBaseComponent text) {
-        Preconditions.checkNotNull(text, "text");
+    public void onHoverShowText(@NonNull IChatBaseComponent text) {
        hoverEvent = new ChatHoverable(EnumHoverAction.SHOW_TEXT, text);
    }

    /**
     * Sets hover action to SHOW_ITEM and item to given value
-     * @param serializedItem - item to show
+     *
+     * @param   serializedItem
+     *          item to show
     */
-    public void onHoverShowItem(String serializedItem) {
-        Preconditions.checkNotNull(serializedItem, "item");
+    public void onHoverShowItem(@NonNull String serializedItem) {
        hoverEvent = new ChatHoverable(EnumHoverAction.SHOW_ITEM, new IChatBaseComponent(serializedItem));
    }

    /**
     * Sets hover action to SHOW_ENTITY and entity data to given values
-     * @param type - entity type
-     * @param id - entity uuid
-     * @param name - entity custom name
+     *
+     * @param   type
+     *          entity type
+     * @param   id
+     *          entity uuid
+     * @param   name
+     *          entity custom name
     */
-    public void onHoverShowEntity(String type, UUID id, String name) {
-        Preconditions.checkNotNull(type, "type");
-        Preconditions.checkNotNull(id, "id");
-        if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 16) {
-            hoverEvent = new ChatHoverable(EnumHoverAction.SHOW_ENTITY, new ChatComponentEntity(type, id, name));
-        } else if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 13) {
-            hoverEvent = new ChatHoverable(EnumHoverAction.SHOW_ENTITY, new IChatBaseComponent(String.format("{type:\"%s\",id:\"%s\",name:\"{\\\"text\\\":\\\"%s\\\"}\"}", type, id, name)));
-        } else if (TabAPI.getInstance().getServerVersion().getMinorVersion() == 12) {
-            hoverEvent = new ChatHoverable(EnumHoverAction.SHOW_ENTITY, new IChatBaseComponent(String.format("{type:\"%s\",id:\"%s\",name:\"%s\"}", type, id, name)));
-        } else if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 8) {
-            hoverEvent = new ChatHoverable(EnumHoverAction.SHOW_ENTITY, new IChatBaseComponent(String.format("{type:%s,id:%s,name:%s}", type, id, name)));
-        } else {
-            throw new IllegalStateException("show_entity hover action is not supported on <1.8");
-        }
+    public void onHoverShowEntity(@NonNull String type, @NonNull UUID id, String name) {
+        hoverEvent = new ChatHoverable(EnumHoverAction.SHOW_ENTITY, new ChatComponentEntity(type, id, name));
    }

-    public void onHover(EnumHoverAction action, IChatBaseComponent value) {
-        Preconditions.checkNotNull(action, "action");
-        Preconditions.checkNotNull(value, "value");
+    public void onHover(@NonNull EnumHoverAction action, @NonNull IChatBaseComponent value) {
        hoverEvent = new ChatHoverable(action, value);
    }

-    public String getFont() {
-        return font;
-    }
-
-    public void setFont(String font) {
-        this.font = font;
-    }
-
    @SuppressWarnings("unchecked")
    public JSONObject serialize() {
        JSONObject json = new JSONObject();
@@ -272,7 +196,7 @@ public class ChatModifier {
            JSONObject hover = new JSONObject();
            hover.put("action", hoverEvent.getAction().toString().toLowerCase());
            if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 16) {
-                hover.put("contents", hoverEvent.getValue());
+                hover.put(hoverEvent.getAction().getPreferredKey(), hoverEvent.getValue());
            } else {
                hover.put("value", TabAPI.getInstance().getServerVersion().getMinorVersion() >= 9 ?
                        hoverEvent.getValue() : hoverEvent.getValue().toRawText());
@@ -292,12 +216,4 @@ public class ChatModifier {
        if (isObfuscated()) builder.append(EnumChatFormat.OBFUSCATED.getFormat());
        return builder.toString();
    }
-
-    public void setTargetVersion(ProtocolVersion targetVersion) {
-        this.targetVersion = targetVersion;
-    }
-
-    public ProtocolVersion getTargetVersion() {
-        return targetVersion;
-    }
 }
@@ -1,8 +1,10 @@
 package me.neznamy.tab.api.chat;

+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
 import me.neznamy.tab.api.ProtocolVersion;
 import me.neznamy.tab.api.TabAPI;
-import me.neznamy.tab.api.util.Preconditions;
+import org.jetbrains.annotations.NotNull;
 import org.json.simple.JSONObject;
 import org.json.simple.parser.JSONParser;
 import org.json.simple.parser.ParseException;
@@ -23,10 +25,11 @@ import java.util.List;
 * will act like a normal chat component.
 */
@SuppressWarnings("unchecked")
+@RequiredArgsConstructor
 public class DeserializedChatComponent extends IChatBaseComponent {

    /** The original serialized component string */
-    private final String json;
+    @NonNull private final String json;

    /**
     * Flag tracking whether this component was fully deserialized
@@ -41,17 +44,6 @@ public class DeserializedChatComponent extends IChatBaseComponent {
     */
    private boolean modified;

-    /**
-     * Constructs new instance with given parameter
-     *
-     * @param   json
-     *          serialized component as string
-     */
-    public DeserializedChatComponent(String json) {
-        Preconditions.checkNotNull(json, "json");
-        this.json = json;
-    }
-
    @Override
    public String toString() {
        if (modified) return super.toString();
@@ -77,7 +69,7 @@ public class DeserializedChatComponent extends IChatBaseComponent {
    }

    @Override
-    public ChatModifier getModifier() {
+    public @NotNull ChatModifier getModifier() {
        if (!deserialized) deserialize();
        return super.getModifier();
    }
@@ -90,14 +82,14 @@ public class DeserializedChatComponent extends IChatBaseComponent {
    }

    @Override
-    public void addExtra(IChatBaseComponent child) {
+    public void addExtra(@NotNull IChatBaseComponent child) {
        if (!deserialized) deserialize();
        modified = true;
        super.addExtra(child);
    }

    @Override
-    public void setModifier(ChatModifier modifier) {
+    public void setModifier(@NotNull ChatModifier modifier) {
        if (!deserialized) deserialize();
        modified = true;
        super.setModifier(modifier);
@@ -156,15 +148,13 @@ public class DeserializedChatComponent extends IChatBaseComponent {
    /**
     * Returns boolean value of requested key from map
     *
-     * @param    jsonObject
-     *             map to get value from
-     * @param    key
-     *             name of key
-     * @return    value from json object or null if not present
+     * @param   jsonObject
+     *          map to get value from
+     * @param   key
+     *          name of key
+     * @return  value from json object or null if not present
     */
-    private static Boolean getBoolean(JSONObject jsonObject, String key) {
-        Preconditions.checkNotNull(jsonObject, "json object");
-        Preconditions.checkNotNull(key, "key");
+    private static Boolean getBoolean(@NonNull JSONObject jsonObject, @NonNull String key) {
        String value = String.valueOf(jsonObject.getOrDefault(key, null));
        return "null".equals(value) ? null : Boolean.parseBoolean(value);
    }
@@ -1,5 +1,6 @@
 package me.neznamy.tab.api.chat;

+import lombok.Getter;
 import me.neznamy.tab.api.chat.rgb.RGBUtils;

 /**
@@ -40,33 +41,34 @@ public enum EnumChatFormat {
    public static final String COLOR_STRING = String.valueOf(COLOR_CHAR);

    /** Character representing the color or magic code */
-    private final char character;
+    @Getter private final char character;

    /** Red value of this constant, 0 for magic codes */
-    private final short red;
+    @Getter private final short red;

    /** Green value of this constant, 0 for magic codes */
-    private final short green;
+    @Getter private final short green;

    /** Blue value of this constant, 0 for magic codes */
-    private final short blue;
+    @Getter private final short blue;

    /** Color as 6-digit hex code, null for magic codes */
-    private final String hexCode;
+    @Getter private final String hexCode;

    /** Color symbol followed by constant's character */
-    private final String chatFormat;
+    @Getter private final String format;

    /**
     * Constructs new color instance with given character and hex code
-     * @param    character
-     *             character which the color goes by
-     * @param    hexCode
-     *             6-digit hex code of the color
+     *
+     * @param   character
+     *          character which the color goes by
+     * @param   hexCode
+     *          6-digit hex code of the color
     */
    EnumChatFormat(char character, String hexCode) {
        this.character = character;
-        this.chatFormat = String.valueOf(COLOR_CHAR) + character;
+        this.format = String.valueOf(COLOR_CHAR) + character;
        this.hexCode = hexCode;
        int hexColor = Integer.parseInt(hexCode, 16);
        red = (short) ((hexColor >> 16) & 0xFF);
@@ -76,47 +78,25 @@ public enum EnumChatFormat {

    /**
     * Constructs new magic code instance with given character
-     * @param    character
-     *             character representing the magic code
+     *
+     * @param   character
+     *          character representing the magic code
     */
    EnumChatFormat(char character) {
        this.character = character;
-        this.chatFormat = String.valueOf(COLOR_CHAR) + character;
+        this.format = String.valueOf(COLOR_CHAR) + character;
        red = 0;
        green = 0;
        blue = 0;
        hexCode = null;
    }

-    /**
-     * Returns red value of this color code
-     * @return    red value
-     */
-    public short getRed() {
-        return red;
-    }
-
-    /**
-     * Returns green value of this color code
-     * @return    green value
-     */
-    public short getGreen() {
-        return green;
-    }
-
-    /**
-     * Returns blue value of this color code
-     * @return    blue value
-     */
-    public short getBlue() {
-        return blue;
-    }
-
    /**
     * Returns enum value based on provided character or null if character is not valid
-     * @param    c
-     *             color code character (0-9, a-f, k-o, r)
-     * @return    instance from the character or null if character is not valid
+     *
+     * @param   c
+     *          color code character (0-9, a-f, k-o, r)
+     * @return  instance from the character or null if character is not valid
     */
    public static EnumChatFormat getByChar(char c) {
        for (EnumChatFormat format : VALUES) {
@@ -128,9 +108,10 @@ public enum EnumChatFormat {
    /**
     * Returns enum value of last colors used in given string.
     * If it's null, empty or does not contain color codes, WHITE is returned.
-     * @param    string
-     *             string to check last colors of
-     * @return    last used color code in given string or WHITE if nothing is found
+     *
+     * @param   string
+     *          string to check last colors of
+     * @return  last used color code in given string or WHITE if nothing is found
     */
    public static EnumChatFormat lastColorsOf(String string) {
        if (string == null || string.length() == 0) return EnumChatFormat.WHITE;
@@ -145,39 +126,16 @@ public enum EnumChatFormat {
        return EnumChatFormat.WHITE;
    }

-    /**
-     * Returns color char followed by color's character
-     * @return color char followed by color's character
-     */
-    public String getFormat() {
-        return chatFormat;
-    }
-
-    /**
-     * Returns character representing this color
-     * @return character representing this color
-     */
-    public char getCharacter() {
-        return character;
-    }
-
-    /**
-     * Returns hex code of this format, null if this is a magic code
-     * @return hex code of this format
-     */
-    public String getHexCode() {
-        return hexCode;
-    }
-
    /**
     * Returns enum value with exact red, green and blue values or null if no match was found
-     * @param    red
-     *             exact red value
-     * @param    green
-     *             exact green value
-     * @param    blue
-     *             exact blue value
-     * @return    enum value or null if no such combination exists
+     *
+     * @param   red
+     *          exact red value
+     * @param   green
+     *          exact green value
+     * @param   blue
+     *          exact blue value
+     * @return  enum value or null if no such combination exists
     */
    public static EnumChatFormat fromRGBExact(int red, int green, int blue){
        for (EnumChatFormat format : VALUES) {
@@ -189,9 +147,10 @@ public enum EnumChatFormat {
    /**
     * Color translation method taken from bukkit, which converts '&amp;' symbol into
     * the actual color character if followed by a valid color character.
-     * @param    textToTranslate
-     *             text to replace color symbol in
-     * @return    colorized string from provided text
+     *
+     * @param   textToTranslate
+     *          text to replace color symbol in
+     * @return  colorized string from provided text
     */
    public static String color(String textToTranslate){
        if (textToTranslate == null) return null;
@@ -208,9 +167,10 @@ public enum EnumChatFormat {

    /**
     * Turns back the color symbol into '&amp;' symbol in provided text.
-     * @param    text
-     *             text to revert colors in
-     * @return    reverted text
+     *
+     * @param   text
+     *          text to revert colors in
+     * @return  reverted text
     */
    public static String decolor(String text) {
        if (text == null) return null;
@@ -220,9 +180,10 @@ public enum EnumChatFormat {

    /**
     * Code taken from bukkit, which returns last color codes used in provided text.
-     * @param    input
-     *             text to get last colors from
-     * @return    last colors used in provided text or empty string if nothing was found
+     *
+     * @param   input
+     *          text to get last colors from
+     * @return  last colors used in provided text or empty string if nothing was found
     */
    public static String getLastColors(String input) {
        if (input == null) return "";
@@ -1,9 +1,13 @@
 package me.neznamy.tab.api.chat;

+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.NonNull;
+import lombok.Setter;
 import me.neznamy.tab.api.ProtocolVersion;
 import me.neznamy.tab.api.TabAPI;
 import me.neznamy.tab.api.chat.rgb.RGBUtils;
-import me.neznamy.tab.api.util.Preconditions;
+import me.neznamy.tab.api.util.ComponentCache;
 import org.json.simple.JSONObject;

 import java.util.*;
@@ -12,38 +16,37 @@ import java.util.*;
 * A class representing the n.m.s.IChatBaseComponent class to make work with it much easier
 */
@SuppressWarnings("unchecked")
+@NoArgsConstructor
 public class IChatBaseComponent {

    /**
     * Component cache maps to avoid large memory allocations as well as
     * higher CPU usage when using animations which send the same text on repeat.
     */
-    private static final Map<String, IChatBaseComponent> componentCache = new HashMap<>();
-    private static final Map<IChatBaseComponent, String> serializeCacheModern = new HashMap<>();
-    private static final Map<IChatBaseComponent, String> serializeCacheLegacy = new HashMap<>();
+    private static final ComponentCache<String, IChatBaseComponent> stringCache = new ComponentCache<>(10000, (text, clientVersion) -> {
+                return text.contains("#") || text.contains("&x") || text.contains(EnumChatFormat.COLOR_CHAR + "x") || text.contains("<") ?
+                    IChatBaseComponent.fromColoredText(text) : //contains RGB colors
+                    new IChatBaseComponent(text); //no RGB
+            });
+    private static final ComponentCache<IChatBaseComponent, String> serializeCache = new ComponentCache<>(10000,
+            (component, clientVersion) -> component.toString());

    /** Text of the component */
-    private String text;
+    @Getter @Setter private String text;

    /** Chat modifier containing color, magic codes, hover and click event */
-    private ChatModifier modifier = new ChatModifier();
+    @Getter @Setter @NonNull private ChatModifier modifier = new ChatModifier();

    /** Extra components used in "extra" field */
    private List<IChatBaseComponent> extra;

-    /**
-     * Constructs a new empty component
-     */
-    public IChatBaseComponent() {
-    }
-    
    /**
     * Constructs a new component which is a clone of provided component
-     * @param    component
-     *             component to clone
+     *
+     * @param   component
+     *          component to clone
     */
-    public IChatBaseComponent(IChatBaseComponent component) {
-        Preconditions.checkNotNull(component, "component");
+    public IChatBaseComponent(@NonNull IChatBaseComponent component) {
        this.text = component.text;
        this.modifier = new ChatModifier(component.modifier);
        for (IChatBaseComponent child : component.getExtra()) {
@@ -53,8 +56,9 @@ public class IChatBaseComponent {

    /**
     * Constructs new instance with given text
-     * @param    text
-     *             text to display
+     *
+     * @param   text
+     *          text to display
     */
    public IChatBaseComponent(String text) {
        this.text = text;
@@ -62,7 +66,8 @@ public class IChatBaseComponent {

    /**
     * Returns list of extra components. If no extra components are defined, returns empty list.
-     * @return    list of extra components
+     *
+     * @return  list of extra components
     */
    public List<IChatBaseComponent> getExtra(){
        if (extra == null) return Collections.emptyList();
@@ -71,11 +76,12 @@ public class IChatBaseComponent {

    /**
     * Sets full list of extra components to given list. Does not allow empty list.
-     * @param    components
-     *             components to use as extra
-     * @return    self
-     * @throws    IllegalArgumentException
-     *             if {@code components} is an empty list
+     *
+     * @param   components
+     *          components to use as extra
+     * @return  self
+     * @throws  IllegalArgumentException
+     *          if {@code components} is an empty list
     */
    public IChatBaseComponent setExtra(List<IChatBaseComponent> components){
        if (components.isEmpty()) throw new IllegalArgumentException("Unexpected empty array of components"); //exception taken from minecraft
@@ -85,57 +91,21 @@ public class IChatBaseComponent {

    /**
     * Appends provided component as extra component
-     * @param    child
-     *            component to append
+     *
+     * @param   child
+     *          component to append
     */
-    public void addExtra(IChatBaseComponent child) {
-        Preconditions.checkNotNull(child, "extra");
+    public void addExtra(@NonNull IChatBaseComponent child) {
        if (extra == null) extra = new ArrayList<>();
        extra.add(child);
    }

-    /**
-     * Returns text of this component
-     * @return    text of this component
-     */
-    public String getText() {
-        return text;
-    }
-
-    /**
-     * Returns chat modifier of this component
-     * @return    chat modifier of this component
-     */
-    public ChatModifier getModifier() {
-        return modifier;
-    }
-
-    /**
-     * Sets modifier to provided value
-     * @param    modifier
-     *             modifier to set value to
-     * @throws    IllegalArgumentException
-     *             if {@code modifier} is null
-     */
-    public void setModifier(ChatModifier modifier) {
-        Preconditions.checkNotNull(modifier, "modifier");
-        this.modifier = modifier;
-    }
-
-    /**
-     * Changes text of this component
-     * @param    text
-     *             text to show
-     */
-    public void setText(String text) {
-        this.text = text;
-    }
-
    /**
     * Deserializes string and returns created component. If provided string is null, returns null.
-     * @param    json
-     *             serialized string
-     * @return    Deserialized component or null if input is null
+     *
+     * @param   json
+     *          serialized string
+     * @return  Deserialized component or null if input is null
     */
    public static IChatBaseComponent deserialize(String json) {
        if (json == null) return null;
@@ -146,8 +116,9 @@ public class IChatBaseComponent {
     * Converts the component to a string representing the serialized component.
     * This method is only used internally by json library since it's missing
     * protocol version field used by the method.
-     * @return    serialized component in string form
-     * @see #toString(ProtocolVersion)
+     *
+     * @return  serialized component in string form
+     * @see     #toString(ProtocolVersion)
     */
    @Override
    public String toString() {
@@ -162,9 +133,10 @@ public class IChatBaseComponent {
    /**
     * Serializes this component with colors based on client version.
     * If client version is &lt;1.16, HEX colors will be converted to legacy colors.
-     * @param    clientVersion
-     *             client version to adapt component for
-     * @return    serialized string
+     *
+     * @param   clientVersion
+     *          client version to adapt component for
+     * @return  serialized string
     */
    public String toString(ProtocolVersion clientVersion) {
        return toString(clientVersion, false);
@@ -173,11 +145,12 @@ public class IChatBaseComponent {
    /**
     * Serializes this component with colors based on client version.
     * If client version is &lt;1.16, HEX colors will be converted to legacy colors.
-     * @param    clientVersion
-     *             client version to adapt component for
-     * @param    sendTranslatableIfEmpty
-     *             whether empty translatable should be sent if text is empty or not
-     * @return    serialized string
+     *
+     * @param   clientVersion
+     *          client version to adapt component for
+     * @param   sendTranslatableIfEmpty
+     *          whether empty translatable should be sent if text is empty or not
+     * @return  serialized string
     */
    public String toString(ProtocolVersion clientVersion, boolean sendTranslatableIfEmpty) {
        if (extra == null) {
@@ -194,30 +167,18 @@ public class IChatBaseComponent {
        for (IChatBaseComponent child : getExtra()) {
            child.modifier.setTargetVersion(clientVersion);
        }
-        String string;
-        if (clientVersion.getMinorVersion() >= 16) {
-            if (serializeCacheModern.containsKey(this)) return serializeCacheModern.get(this);
-            string = toString();
-            if (serializeCacheModern.size() > 10000) serializeCacheModern.clear();
-            serializeCacheModern.put(this, string);
-        } else {
-            if (serializeCacheLegacy.containsKey(this)) return serializeCacheLegacy.get(this);
-            string = toString();
-            if (serializeCacheLegacy.size() > 10000) serializeCacheLegacy.clear();
-            serializeCacheLegacy.put(this, string);
-        }
-        return string;
+        return serializeCache.get(this, clientVersion);
    }

    /**
     * Returns organized component from colored text
-     * @param    originalText
-     *             text to convert
-     * @return    organized component from colored text
+     *
+     * @param   originalText
+     *          text to convert
+     * @return  organized component from colored text
     */
-    public static IChatBaseComponent fromColoredText(String originalText){
-        Preconditions.checkNotNull(originalText, "text");
-        String text = RGBUtils.getInstance().applyFormats(EnumChatFormat.color(originalText), false);
+    public static IChatBaseComponent fromColoredText(@NonNull String originalText){
+        String text = RGBUtils.getInstance().applyFormats(EnumChatFormat.color(originalText));
        List<IChatBaseComponent> components = new ArrayList<>();
        StringBuilder builder = new StringBuilder();
        IChatBaseComponent component = new IChatBaseComponent();
@@ -299,11 +260,12 @@ public class IChatBaseComponent {

    /**
     * Returns true if text contains legacy color request at defined RGB index start
-     * @param    text
-     *             text to check
-     * @param    i
-     *             current index start
-     * @return    true if legacy color is defined, false if not
+     *
+     * @param   text
+     *          text to check
+     * @param   i
+     *          current index start
+     * @return  true if legacy color is defined, false if not
     */
    private static boolean containsLegacyCode(String text, int i) {
        if (text.length() - i < 9 || text.charAt(i+7) != '|') return false;
@@ -312,7 +274,8 @@ public class IChatBaseComponent {

    /**
     * Converts this component into a simple text with legacy colors (the closest match if color is set to RGB)
-     * @return    The simple text format
+     *
+     * @return  The simple text format
     */
    public String toLegacyText() {
        StringBuilder builder = new StringBuilder();
@@ -323,11 +286,12 @@ public class IChatBaseComponent {
    /**
     * Appends text to string builder, might also add color and magic codes if they are different
     * from previous component in chain.
-     * @param    builder
-     *             builder to append text to
-     * @param    previousFormatting
-     *             colors and magic codes in previous component
-     * @return    wew formatting, might be identical to previous one
+     *
+     * @param   builder
+     *          builder to append text to
+     * @param   previousFormatting
+     *          colors and magic codes in previous component
+     * @return  new formatting, might be identical to previous one
     */
    private String append(StringBuilder builder, String previousFormatting) {
        String formatting = previousFormatting;
@@ -347,7 +311,8 @@ public class IChatBaseComponent {

    /**
     * Returns colors and magic codes of this component
-     * @return    used colors and magic codes
+     *
+     * @return  used colors and magic codes
     */
    private String getFormatting() {
        StringBuilder builder = new StringBuilder();
@@ -365,7 +330,8 @@ public class IChatBaseComponent {

    /**
     * Returns raw text without colors, only works correctly when component is organized
-     * @return    raw text in this component and all child components
+     *
+     * @return  raw text in this component and all child components
     */
    public String toRawText() {
        StringBuilder builder = new StringBuilder();
@@ -378,7 +344,8 @@ public class IChatBaseComponent {

    /**
     * Converts the component into flat text with used colors (including rgb) and magic codes
-     * @return    converted text
+     *
+     * @return  converted text
     */
    public String toFlatText() {
        StringBuilder builder = new StringBuilder();
@@ -395,23 +362,12 @@ public class IChatBaseComponent {
     * Returns the most optimized component based on text. Returns null if text is null,
     * organized component if RGB colors are used or simple component with only text field
     * containing the whole text when no RGB colors are used
-     * @param    text
-     *             text to create component from
-     * @return    The most performance-optimized component based on text
+     *
+     * @param   text
+     *          text to create component from
+     * @return  The most performance-optimized component based on text
     */
    public static IChatBaseComponent optimizedComponent(String text){
-        if (text == null) return null;
-        if (componentCache.containsKey(text)) return componentCache.get(text);
-        IChatBaseComponent component;
-        if (text.contains("#") || text.contains("&x") || text.contains(EnumChatFormat.COLOR_CHAR + "x")){
-            //contains RGB colors
-            component = IChatBaseComponent.fromColoredText(text);
-        } else {
-            //no RGB
-            component = new IChatBaseComponent(text);
-        }
-        if (componentCache.size() > 10000) componentCache.clear();
-        componentCache.put(text, component);
-        return component;
+        return stringCache.get(text, null);
    }
 }
@@ -1,5 +1,7 @@
 package me.neznamy.tab.api.chat;

+import lombok.Getter;
+import lombok.NonNull;
 import me.neznamy.tab.api.util.Preconditions;

 /**
@@ -24,18 +26,17 @@ public class TextColor {
     * Boolean value whether the legacy color was forced with constructor or should be
     * automatically assigned as closest color.
     * This value is used in gradients when converting text for legacy players. */
-    private boolean legacyColorForced;
+    @Getter private boolean legacyColorForced;

    /**
     * Constructs new instance as a clone of the provided color.
     *
-     * @param    color
-     *             color to create a clone of
-     * @throws    IllegalArgumentException
-     *             if color is {@code null}
+     * @param   color
+     *          color to create a clone of
+     * @throws  IllegalArgumentException
+     *          if color is {@code null}
     */
-    public TextColor(TextColor color) {
-        Preconditions.checkNotNull(color, "color");
+    public TextColor(@NonNull TextColor color) {
        rgb = color.rgb;
        legacyColor = color.legacyColor;
        hexCode = color.hexCode;
@@ -45,29 +46,26 @@ public class TextColor {
    /**
     * Constructs new instance from provided 6-digit hex code string
     *
-     * @param    hexCode
-     *             a 6-digit combination of hex numbers as a string
-     * @throws    IllegalArgumentException
-     *             if hexCode is {@code null}
+     * @param   hexCode
+     *          a 6-digit combination of hex numbers as a string
+     * @throws  IllegalArgumentException
+     *          if hexCode is {@code null}
     */
-    public TextColor(String hexCode) {
-        Preconditions.checkNotNull(hexCode, "hex code");
+    public TextColor(@NonNull String hexCode) {
        this.hexCode = hexCode;
    }

    /**
     * Constructs new instance from provided 6-digit hex code and forced legacy color
     *
-     * @param    hexCode
-     *             6-digit combination of hex numbers as a string
-     * @param    legacyColor
-     *             color to use for legacy clients instead of using the closest legacy color
-     * @throws    IllegalArgumentException
-     *             if {@code hexCode} is {@code null} or {@code legacyColor} is {@code null}
+     * @param   hexCode
+     *          6-digit combination of hex numbers as a string
+     * @param   legacyColor
+     *          color to use for legacy clients instead of using the closest legacy color
+     * @throws  IllegalArgumentException
+     *          if {@code hexCode} is {@code null} or {@code legacyColor} is {@code null}
     */
-    public TextColor(String hexCode, EnumChatFormat legacyColor) {
-        Preconditions.checkNotNull(hexCode, "hex code");
-        Preconditions.checkNotNull(legacyColor, "legacy color");
+    public TextColor(@NonNull String hexCode, EnumChatFormat legacyColor) {
        this.hexCode = hexCode;
        this.legacyColorForced = true;
        this.legacyColor = legacyColor;
@@ -76,13 +74,12 @@ public class TextColor {
    /**
     * Constructs new instance from provided legacy color
     *
-     * @param    legacyColor
-     *             legacy color to construct the instance from
-     * @throws    IllegalArgumentException
-     *             if {@code legacyColor} is {@code null}
+     * @param   legacyColor
+     *          legacy color to construct the instance from
+     * @throws  IllegalArgumentException
+     *          if {@code legacyColor} is {@code null}
     */
-    public TextColor(EnumChatFormat legacyColor) {
-        Preconditions.checkNotNull(legacyColor, "legacy color");
+    public TextColor(@NonNull EnumChatFormat legacyColor) {
        this.rgb = (legacyColor.getRed() << 16) + (legacyColor.getGreen() << 8) + legacyColor.getBlue();
        this.hexCode = legacyColor.getHexCode();
    }
@@ -90,14 +87,14 @@ public class TextColor {
    /**
     * Constructs new instance with red, green and blue values
     *
-     * @param    red
-     *             red value
-     * @param    green
-     *             green value
-     * @param    blue
-     *             blue value
-     * @throws    IllegalArgumentException
-     *             if {@code red}, {@code green} or {@code blue} is out of range ({@code 0-255})
+     * @param   red
+     *          red value
+     * @param   green
+     *          green value
+     * @param   blue
+     *          blue value
+     * @throws  IllegalArgumentException
+     *          if {@code red}, {@code green} or {@code blue} is out of range ({@code 0-255})
     */
    public TextColor(int red, int green, int blue) {
        Preconditions.checkRange(red, 0, 255, "red");
@@ -130,7 +127,8 @@ public class TextColor {

    /**
     * Returns {@code red} value
-     * @return    red value
+     *
+     * @return  red value
     */
    public int getRed() {
        if (rgb == -1) rgb = Integer.parseInt(hexCode, 16);
@@ -139,7 +137,8 @@ public class TextColor {

    /**
     * Returns {@code green} value
-     * @return    green value
+     *
+     * @return  green value
     */
    public int getGreen() {
        if (rgb == -1) rgb = Integer.parseInt(hexCode, 16);
@@ -148,7 +147,8 @@ public class TextColor {

    /**
     * Returns {@code blue} value
-     * @return    blue value
+     *
+     * @return  blue value
     */
    public int getBlue() {
        if (rgb == -1) rgb = Integer.parseInt(hexCode, 16);
@@ -159,7 +159,8 @@ public class TextColor {
     * Returns the closest legacy color of this color object.
     * If the color was defined in constructor, it's returned.
     * Otherwise, the closest color is calculated the then returned.
-     * @return    closest legacy color
+     *
+     * @return  closest legacy color
     */
    public EnumChatFormat getLegacyColor() {
        if (legacyColor == null) legacyColor = loadClosestColor();
@@ -168,7 +169,8 @@ public class TextColor {

    /**
     * Returns the rgb combination as a 6-digit hex code string
-     * @return    the rgb combination as a 6-digit hex code string
+     *
+     * @return  the rgb combination as a 6-digit hex code string
     */
    public String getHexCode() {
        if (hexCode == null) hexCode = String.format("%06X", rgb);
@@ -178,7 +180,8 @@ public class TextColor {
    /**
     * Converts the color into a valid color value used in color field in chat component.
     * That is either 6-digit hex code prefixed with '#', or lowercase legacy color.
-     * @return    the color serialized for use in chat component
+     *
+     * @return  the color serialized for use in chat component
     */
    public String toString() {
        EnumChatFormat legacyEquivalent = EnumChatFormat.fromRGBExact(getRed(), getGreen(), getBlue());
@@ -189,22 +192,15 @@ public class TextColor {
        return "#" + getHexCode();
    }

-    /**
-     * Returns true if legacy color was forced with a constructor, false if not
-     * @return    true if forced, false if not
-     */
-    public boolean isLegacyColorForced() {
-        return legacyColorForced;
-    }
-
    /**
     * Reads the string as it appears in chat component and turns it into the color object.
     * If the entered string is null, returns null.
     * If it's prefixed with '#', it's considered as a hex code.
     * Otherwise, it is considered being a lowercase legacy color.
-     * @param    string
-     *             string from color field in chat component
-     * @return    An instance from specified string or null if string is null
+     *
+     * @param   string
+     *          string from color field in chat component
+     * @return  An instance from specified string or null if string is null
     */
    public static TextColor fromString(String string) {
        if (string == null) return null;
@@ -0,0 +1,69 @@
+package me.neznamy.tab.api.chat;
+
+import lombok.AllArgsConstructor;
+import lombok.NonNull;
+import me.neznamy.tab.api.ProtocolVersion;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+/**
+ * A class extending IChatBaseComponent that holds the original value
+ * to avoid deserializing it, which is an unnecessary operation that
+ * slows down the performance, as well as makes code more complicated
+ * and open to problems.
+ */
+@AllArgsConstructor
+public class WrappedChatComponent extends IChatBaseComponent {
+
+    /** Original NMS component */
+    private final Object originalComponent;
+
+    /**
+     * Returns the original NMS component
+     * @return  the original NMS component
+     */
+    public Object get() {
+        return originalComponent;
+    }
+
+    @Override
+    public String toString() {
+        throw new UnsupportedOperationException("Not supported for " + getClass().getSimpleName());
+    }
+
+    @Override
+    public String toString(ProtocolVersion clientVersion) {
+        throw new UnsupportedOperationException("Not supported for " + getClass().getSimpleName());
+    }
+
+    @Override
+    public List<IChatBaseComponent> getExtra(){
+        throw new UnsupportedOperationException("Not supported for " + getClass().getSimpleName());
+    }
+
+    @Override
+    public String getText() {
+        throw new UnsupportedOperationException("Not supported for " + getClass().getSimpleName());
+    }
+
+    @Override
+    public @NotNull ChatModifier getModifier() {
+        throw new UnsupportedOperationException("Not supported for " + getClass().getSimpleName());
+    }
+
+    @Override
+    public IChatBaseComponent setExtra(List<IChatBaseComponent> components){
+        throw new UnsupportedOperationException("Not supported for " + getClass().getSimpleName());
+    }
+
+    @Override
+    public void addExtra(@NonNull IChatBaseComponent child) {
+        throw new UnsupportedOperationException("Not supported for " + getClass().getSimpleName());
+    }
+
+    @Override
+    public void setModifier(@NotNull ChatModifier modifier) {
+        throw new UnsupportedOperationException("Not supported for " + getClass().getSimpleName());
+    }
+}
@@ -1,20 +1,20 @@
 package me.neznamy.tab.api.chat.rgb;

-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
+import lombok.Getter;
+import lombok.NonNull;
 import me.neznamy.tab.api.chat.EnumChatFormat;
 import me.neznamy.tab.api.chat.TextColor;
-import me.neznamy.tab.api.chat.rgb.format.BukkitFormat;
-import me.neznamy.tab.api.chat.rgb.format.CMIFormat;
-import me.neznamy.tab.api.chat.rgb.format.HtmlFormat;
-import me.neznamy.tab.api.chat.rgb.format.RGBFormatter;
-import me.neznamy.tab.api.chat.rgb.format.UnnamedFormat1;
+import me.neznamy.tab.api.chat.rgb.format.*;
 import me.neznamy.tab.api.chat.rgb.gradient.CMIGradient;
 import me.neznamy.tab.api.chat.rgb.gradient.CommonGradient;
 import me.neznamy.tab.api.chat.rgb.gradient.GradientPattern;
 import me.neznamy.tab.api.chat.rgb.gradient.KyoriGradient;
-import me.neznamy.tab.api.util.Preconditions;
+import me.neznamy.tab.api.util.ReflectionUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;

 /**
 * A helper class to reformat all RGB formats into the default #RRGGBB and apply gradients
@@ -22,7 +22,7 @@ import me.neznamy.tab.api.util.Preconditions;
 public class RGBUtils {

    /** Instance of the class */
-    private static final RGBUtils instance = new RGBUtils();
+    @Getter private static final RGBUtils instance = new RGBUtils();

    /** Registered RGB formatters */
    private final RGBFormatter[] formats;
@@ -40,12 +40,17 @@ public class RGBUtils {
     * Constructs new instance and loads all RGB patterns and gradients
     */
    public RGBUtils() {
-        formats = new RGBFormatter[] {
-                new BukkitFormat(),
-                new CMIFormat(),
-                new UnnamedFormat1(),
-                new HtmlFormat()
-        };
+        List<RGBFormatter> list = new ArrayList<>();
+        if (ReflectionUtils.classExists("net.kyori.adventure.text.minimessage.MiniMessage")) {
+            list.add(new MiniMessageFormat());
+        }
+        list.add(new BukkitFormat());
+        list.add(new CMIFormat());
+        list.add(new UnnamedFormat1());
+        list.add(new HtmlFormat());
+        list.add(new KyoriFormat());
+        formats = list.toArray(new RGBFormatter[0]);
+
        gradients = new GradientPattern[] {
                //{#RRGGBB>}text{#RRGGBB<}
                new CMIGradient(),
@@ -61,30 +66,17 @@ public class RGBUtils {
        };
    }

-    /**
-     * Returns instance of this class
-     * @return    instance
-     */
-    public static RGBUtils getInstance() {
-        return instance;
-    }
-
    /**
     * Applies all RGB formats and gradients to text and returns it.
-     * This method is called on every property initialization to convert formats
-     * once instead of on every refresh, if possible. Because of that, parameter
-     * {@code ignorePlaceholders} exists to not break raw placeholder identifiers
-     * @param    text
-     *             original text
-     * @param    ignorePlaceholders
-     *             whether placeholders should be ignored or not
-     * @return    text where everything is converted to #RRGGBB
+     *
+     * @param   text
+     *          original text
+     * @return  text where everything is converted to #RRGGBB
     */
-    public String applyFormats(String text, boolean ignorePlaceholders) {
-        Preconditions.checkNotNull(text, "text");
+    public String applyFormats(@NonNull String text) {
        String replaced = text;
        for (GradientPattern pattern : gradients) {
-            replaced = pattern.applyPattern(replaced, ignorePlaceholders);
+            replaced = pattern.applyPattern(replaced, false);
        }
        for (RGBFormatter formatter : formats) {
            replaced = formatter.reformat(replaced);
@@ -92,22 +84,39 @@ public class RGBUtils {
        return replaced;
    }

+    /**
+     * Applies all gradient formats to text and returns it. This only affects
+     * usage where no placeholder is used inside.
+     *
+     * @param   text
+     *          original text
+     * @return  text where all gradients with static text are converted to #RRGGBB
+     */
+    public String applyCleanGradients(@NonNull String text) {
+        String replaced = text;
+        for (GradientPattern pattern : gradients) {
+            replaced = pattern.applyPattern(replaced, true);
+        }
+        return replaced;
+    }
+
    /**
     * Converts TAB's RGB format (#RRGGBB) into bukkit one
     * (&amp;x&amp;r&amp;r&amp;g&amp;g&amp;b&amp;b) for modern
     * clients (1.16+), for legacy clients it will use the closest color.
-     * @param    text
-     *             text to convert
-     * @param    rgbClient
-     *             whether client accepts RGB or not
-     * @return    converted text
+     *
+     * @param   text
+     *          text to convert
+     * @param   rgbClient
+     *          whether client accepts RGB or not
+     * @return  converted text
     */
    public String convertToBukkitFormat(String text, boolean rgbClient) {
        if (text == null) return null;
        if (!text.contains("#")) return text; //no rgb codes
        if (rgbClient) {
            //converting random formats to TAB one
-            String replaced = applyFormats(text, false);
+            String replaced = applyFormats(text);
            for (Pattern p : new Pattern[]{tabPatternLegacy, tabPattern}) {
                Matcher m = p.matcher(replaced);
                while (m.find()) {
@@ -124,14 +133,15 @@ public class RGBUtils {

    /**
     * Converts all hex codes in given string to legacy codes
-     * @param    text
-     *             text to convert
-     * @return    translated text
+     *
+     * @param   text
+     *          text to convert
+     * @return  translated text
     */
    public String convertRGBtoLegacy(String text) {
        if (text == null) return null;
        if (!text.contains("#")) return EnumChatFormat.color(text);
-        String applied = applyFormats(text, false);
+        String applied = applyFormats(text);
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < applied.length(); i++){
            char c = applied.charAt(i);
@@ -158,12 +168,12 @@ public class RGBUtils {
    /**
     * Returns true if entered string is a valid 6-digit combination of
     * hexadecimal numbers, false if not
-     * @param    string
-     *             string to check
-     * @return    {@code true} if valid, {@code false} if not
+     *
+     * @param   string
+     *          string to check
+     * @return  {@code true} if valid, {@code false} if not
     */
-    public boolean isHexCode(String string) {
-        Preconditions.checkNotNull(string, "string");
+    public boolean isHexCode(@NonNull String string) {
        if (string.length() != 6) return false;
        for (int i=0; i<6; i++) {
            char c = string.charAt(i);
@@ -174,11 +184,12 @@ public class RGBUtils {

    /**
     * Returns true if text contains legacy color request at defined RGB index start
-     * @param    text
-     *             text to check
-     * @param    i
-     *             current index start
-     * @return    {@code true} if legacy color is defined and valid, {@code false} otherwise
+     *
+     * @param   text
+     *          text to check
+     * @param   i
+     *          current index start
+     * @return  {@code true} if legacy color is defined and valid, {@code false} otherwise
     */
    private static boolean containsLegacyCode(String text, int i) {
        if (text.length() - i < 9 || text.charAt(i+7) != '|') return false;
@@ -4,7 +4,7 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;

 /**
- * Formatter for #<RRGGBB>
+ * Formatter for #&lt;RRGGBB&gt;
 */
 public class HtmlFormat implements RGBFormatter {

@@ -0,0 +1,25 @@
+package me.neznamy.tab.api.chat.rgb.format;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Formatter for &lt;#RRGGBB&gt;
+ */
+public class KyoriFormat implements RGBFormatter {
+
+    private final Pattern pattern = Pattern.compile("<#[0-9a-fA-F]{6}>");
+
+    @Override
+    public String reformat(String text) {
+        if (!text.contains("<#")) return text;
+        String replaced = text;
+        Matcher m = pattern.matcher(replaced);
+        while (m.find()) {
+            String hexCode = m.group();
+            String fixed = hexCode.substring(2, 8);
+            replaced = replaced.replace(hexCode, "#" + fixed);
+        }
+        return replaced;
+    }
+}
@@ -0,0 +1,20 @@
+package me.neznamy.tab.api.chat.rgb.format;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
+
+/**
+ * Call to MiniMessage API to reformat text to &amp;x&amp;R&amp;R&amp;G&amp;G&amp;B&amp;B
+ */
+public class MiniMessageFormat implements RGBFormatter {
+
+    @Override
+    public String reformat(String text) {
+        if (!text.contains("<")) return text;
+        try {
+            return LegacyComponentSerializer.legacySection().serialize(MiniMessage.miniMessage().deserialize(text));
+        } catch (Throwable ignored) {
+            return text;
+        }
+    }
+}
@@ -7,8 +7,10 @@ public interface RGBFormatter {

    /**
     * Reformats RGB codes in provided text into #RRGGBB format
-     * @param text - text to format
-     * @return reformatted text
+     *
+     * @param   text
+     *          text to format
+     * @return  reformatted text
     */
    String reformat(String text);
 }
@@ -3,9 +3,11 @@ package me.neznamy.tab.api.chat.rgb.gradient;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;

+import lombok.AllArgsConstructor;
 import me.neznamy.tab.api.chat.EnumChatFormat;
 import me.neznamy.tab.api.chat.TextColor;

+@AllArgsConstructor
 public class CommonGradient implements GradientPattern {

    private final Pattern pattern;
@@ -15,18 +17,7 @@ public class CommonGradient implements GradientPattern {
    private final int startColorStart;
    private final int messageStart;
    private final int endColorStartSub;
-    
-    public CommonGradient(Pattern pattern, Pattern legacyPattern, String containCheck, int legacyCharPosition,
-            int startColorStart, int messageStart, int endColorStartSub) {
-        this.pattern = pattern;
-        this.legacyPattern = legacyPattern;
-        this.containCheck = containCheck;
-        this.legacyCharPosition = legacyCharPosition;
-        this.startColorStart = startColorStart;
-        this.messageStart = messageStart;
-        this.endColorStartSub = endColorStartSub;
-    }
-    
+
    @Override
    public String applyPattern(String text, boolean ignorePlaceholders) {
        if (!text.contains(containCheck)) return text;
@@ -10,17 +10,23 @@ public interface GradientPattern {

    /**
     * Applies gradients in provided text and returns text using only #RRGGBB
-     * @param text - text to be reformatted
-     * @return reformatted text
+     *
+     * @param   text
+     *          text to be reformatted
+     * @return  reformatted text
     */
    String applyPattern(String text, boolean ignorePlaceholders);

    /**
     * Returns gradient text based on start color, text and end color
-     * @param start - start color
-     * @param text - text to be reformatted
-     * @param end - end color
-     * @return reformatted text
+     *
+     * @param   start
+     *          start color
+     * @param   text
+     *          text to be reformatted
+     * @param   end
+     *          end color
+     * @return  reformatted text
     */
    default String asGradient(TextColor start, String text, TextColor end) {
        //lazy support for magic codes in gradients
@@ -7,8 +7,8 @@ import me.neznamy.tab.api.chat.EnumChatFormat;
 import me.neznamy.tab.api.chat.TextColor;

 /**
- * Gradient applier for &lt;gradient:#RRGGBB:#RRGGBB>Text&lt;/gradient>
- * and &lt;gradient:#RRGGBB|L:#RRGGBB>Text&lt;/gradient>
+ * Gradient applier for &lt;gradient:#RRGGBB:#RRGGBB&gt;Text&lt;/gradient&gt;
+ * and &lt;gradient:#RRGGBB|L:#RRGGBB&gt;Text&lt;/gradient&gt;
 */
 public class KyoriGradient implements GradientPattern {

@@ -1,14 +1,13 @@
 package me.neznamy.tab.api.config;

-import java.io.BufferedReader;
-import java.io.BufferedWriter;
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.Setter;
+import me.neznamy.tab.api.TabAPI;
+
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.OutputStreamWriter;
-import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.LinkedHashMap;
@@ -16,9 +15,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;

-import me.neznamy.tab.api.TabAPI;
-import me.neznamy.tab.api.util.Preconditions;
-
 /**
 * Abstract class for configuration file
 */
@@ -29,42 +25,32 @@ public abstract class ConfigurationFile {
    protected List<String> header;

    /** Configuration file content */
-    protected Map<String, Object> values;
+    @Getter @Setter protected Map<String, Object> values;

    /** File to use */
-    protected final File file;
+    @Getter protected final File file;

    /**
     * Constructs new instance and attempts to load specified configuration file.
     * If file does not exist, default file is copied from {@code source}.
     *
-     * @param    source
-     *             Source to copy file from if it does not exist
-     * @param    destination
-     *             File destination to use
-     * @throws    IllegalArgumentException
-     *             if {@code destination} is null
-     * @throws    IllegalStateException
-     *             if file does not exist and source is null
-     * @throws    IOException
-     *             if I/O operation with the file unexpectedly fails
+     * @param   source
+     *          Source to copy file from if it does not exist
+     * @param   destination
+     *          File destination to use
+     * @throws  IllegalArgumentException
+     *          if {@code destination} is null
+     * @throws  IllegalStateException
+     *          if file does not exist and source is null
+     * @throws  IOException
+     *          if I/O operation with the file unexpectedly fails
     */
-    protected ConfigurationFile(InputStream source, File destination) throws IOException {
-        Preconditions.checkNotNull(destination, "destination");
+    protected ConfigurationFile(InputStream source, @NonNull File destination) throws IOException {
        this.file = destination;
        if (file.getParentFile() != null && !file.getParentFile().exists()) Files.createDirectories(file.getParentFile().toPath());
-        if (!file.exists() && source == null) throw new IllegalStateException("File does not exist and source is null");
-        if (file.createNewFile()) {
-//            Files.copy(source, file.toPath());
-            //avoiding MalformedInputException thrown on fabric due to file not having UTF8 encoding by default
-            //also automatically using the encoding so users don't have to worry about it anymore
-            try (BufferedReader reader = new BufferedReader(new InputStreamReader(source, StandardCharsets.UTF_8));
-                BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.UTF_8))){
-                String line;
-                while ((line = reader.readLine()) != null) {
-                    writer.write(line + "\n");
-                }
-            }
+        if (!file.exists()) {
+            if (source == null) throw new IllegalStateException("File does not exist and source is null");
+            Files.copy(source, file.toPath());
        }
        detectHeader();
    }
@@ -76,34 +62,23 @@ public abstract class ConfigurationFile {

    /**
     * Returns simple name of the file
-     * @return    simple name of the file
+     *
+     * @return  simple name of the file
     */
    public String getName() {
        return file.getName();
    }

-    /**
-     * Returns the root value map
-     * @return    the root value map
-     */
-    public Map<String, Object> getValues(){
-        return values;
-    }
-
-    public void setValues(Map<String, Object> values) {
-        this.values = values;
-    }
-
    /**
     * Gets config option with specified path. If the option is not present and
     * {@code defaultValue} is not {@code null}, value is inserted, {@link #save()}
     * called and {@code defaultValue} returned.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @param    defaultValue
-     *             Value to be inserted and returned if option is not present
-     * @return    value from configuration file
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @param   defaultValue
+     *          Value to be inserted and returned if option is not present
+     * @return  value from configuration file
     */
    public Object getObject(String path, Object defaultValue) {
        Object value = values;
@@ -126,9 +101,9 @@ public abstract class ConfigurationFile {
     * Returns config option with specified path. If option is not present,
     * {@code null} is returned.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @return    value from configuration file or null if not present
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @return  value from configuration file or null if not present
     */
    public Object getObject(String path) {
        return getObject(path, null);
@@ -149,11 +124,11 @@ public abstract class ConfigurationFile {
     * Returns value from map without case sensitivity of the key. Returns
     * {@code null} if no such key is found.
     *
-     * @param    map
-     *             map to get value from
-     * @param    key
-     *             case-insensitive key name
-     * @return    map value from case-insensitive key
+     * @param   map
+     *          map to get value from
+     * @param   key
+     *          case-insensitive key name
+     * @return  map value from case-insensitive key
     */
    private Object getIgnoreCase(Map<Object, Object> map, String key) {
        for (Entry<Object, Object> entry : map.entrySet()) {
@@ -166,9 +141,9 @@ public abstract class ConfigurationFile {
     * Returns config option with specified path as {@code String}. Returns {@code null} if
     * option is not present.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @return    value from file or null if not present
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @return  value from file or null if not present
     */
    public String getString(String path) {
        return getString(path, null);
@@ -179,11 +154,11 @@ public abstract class ConfigurationFile {
     * and {@code defaultValue} is not {@code null}, value is inserted, {@link #save()} called
     * and {@code defaultValue} returned.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @param    defaultValue
-     *             Value to be inserted and returned if option is not present
-     * @return    value from configuration file as {@code String}
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @param   defaultValue
+     *          Value to be inserted and returned if option is not present
+     * @return  value from configuration file as {@code String}
     */
    public String getString(String path, String defaultValue) {
        Object value = getObject(path, defaultValue);
@@ -195,9 +170,9 @@ public abstract class ConfigurationFile {
     * Returns config option with specified path as {@code List<String>}. Returns {@code null} if
     * option is not present.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @return    value from file or null if not present
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @return  value from file or null if not present
     */
    public List<String> getStringList(String path) {
        return getStringList(path, null);
@@ -208,11 +183,11 @@ public abstract class ConfigurationFile {
     * and {@code defaultValue} is not {@code null}, value is inserted, {@link #save()} called
     * and {@code defaultValue} returned.
     *
-     * @param    path
-     *             Path of the option with sections separated with "{@code .}"
-     * @param    defaultValue
-     *             Value to be inserted and returned if option is not present
-     * @return    value from configuration file as {@code List<String>}
+     * @param   path
+     *          Path of the option with sections separated with "{@code .}"
+     * @param   defaultValue
+     *          Value to be inserted and returned if option is not present
+     * @return  value from configuration file as {@code List<String>}
     */
    public List<String> getStringList(String path, List<String> defaultValue) {
        Object value = getObject(path, defaultValue);
@@ -222,7 +197,7 @@ public abstract class ConfigurationFile {
        }
        List<String> fixedList = new ArrayList<>();
        for (Object key : (List<Object>)value) {
-            fixedList.add(key.toString());
+            fixedList.add(String.valueOf(key));
        }
        return fixedList;
    }
@@ -231,9 +206,9 @@ public abstract class ConfigurationFile {
     * Returns config option with specified path as {@code Integer}. Returns {@code null} if
     * option is not present.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @return    value from file or null if not present
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @return  value from file or null if not present
     */
    public Integer getInt(String path) {
        return getInt(path, null);
@@ -244,11 +219,11 @@ public abstract class ConfigurationFile {
     * and {@code defaultValue} is not {@code null}, value is inserted, {@link #save()} called
     * and {@code defaultValue} returned.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @param    defaultValue
-     *             Value to be inserted and returned if option is not present
-     * @return    value from configuration file as {@code Integer}
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @param   defaultValue
+     *          Value to be inserted and returned if option is not present
+     * @return  value from configuration file as {@code Integer}
     */
    public Integer getInt(String path, Integer defaultValue) {
        Object value = getObject(path, defaultValue);
@@ -265,11 +240,11 @@ public abstract class ConfigurationFile {
     * and {@code defaultValue} is not {@code null}, value is inserted, {@link #save()} called
     * and {@code defaultValue} returned.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @param    defaultValue
-     *             Value to be inserted and returned if option is not present
-     * @return    value from configuration file as {@code Boolean}
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @param   defaultValue
+     *          Value to be inserted and returned if option is not present
+     * @return  value from configuration file as {@code Boolean}
     */
    public boolean getBoolean(String path, boolean defaultValue) {
        Object value = getObject(path, defaultValue);
@@ -282,11 +257,11 @@ public abstract class ConfigurationFile {
     * and {@code defaultValue} is not {@code null}, value is inserted, {@link #save()} called
     * and {@code defaultValue} returned.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @param    defaultValue
-     *             Value to be inserted and returned if option is not present
-     * @return    value from configuration file as {@code Double}
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @param   defaultValue
+     *          Value to be inserted and returned if option is not present
+     * @return  value from configuration file as {@code Double}
     */
    public Double getDouble(String path, double defaultValue) {
        Object value = getObject(path, defaultValue);
@@ -302,9 +277,9 @@ public abstract class ConfigurationFile {
     * Returns config option with specified path as {@code Map<K, V>}. If the option
     * is not present or value is not a {@code Map}, new empty {@code Map} is returned.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @return    value from configuration file as {@code Map<K, V>}
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @return  value from configuration file as {@code Map<K, V>}
     */
    public <K, V> Map<K, V> getConfigurationSection(String path) {
        if (path == null || path.length() == 0) return (Map<K, V>) values;
@@ -320,9 +295,9 @@ public abstract class ConfigurationFile {
     * Returns {@code true} if the file has option with specified path, {@code false}
     * if not.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @return    {@code true} if present, {@code false} if not
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @return  {@code true} if present, {@code false} if not
     */
    public boolean hasConfigOption(String path) {
        return getObject(path) != null;
@@ -331,10 +306,10 @@ public abstract class ConfigurationFile {
    /**
     * Sets value to the specified path and saves the file to disk by calling {@link #save()}.
     *
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @param    value
-     *             Value to save
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @param   value
+     *          Value to save
     */
    public void set(String path, Object value) {
        set(values, path, value);
@@ -345,13 +320,13 @@ public abstract class ConfigurationFile {
     * Sets value to the specified map with specified path and value. This is an internal method
     * that correctly creates maps to separate sections using "{@code .}".
     *
-     * @param    map
-     *             Map to insert value to
-     * @param    path
-     *             Path to the option with sections separated with "{@code .}"
-     * @param    value
-     *             Value to save
-     * @return    the first argument to allow chaining
+     * @param   map
+     *          Map to insert value to
+     * @param   path
+     *          Path to the option with sections separated with "{@code .}"
+     * @param   value
+     *          Value to save
+     * @return  the first argument to allow chaining
     */
    private Map<String, Object> set(Map<String, Object> map, String path, Object value) {
        if (path.contains(".")) {
@@ -375,11 +350,11 @@ public abstract class ConfigurationFile {
     * Returns the real key name without case sensitivity from map. If not found, inserted key
     * is returned.
     *
-     * @param    map
-     *             Map to check keys of
-     * @param    key
-     *             Key to find
-     * @return    The real key name
+     * @param   map
+     *          Map to check keys of
+     * @param   key
+     *          Key to find
+     * @return  The real key name
     */
    private String getRealKey(Map<?, ?> map, String key) {
        for (Object mapKey : map.keySet()) {
@@ -391,8 +366,8 @@ public abstract class ConfigurationFile {
    /**
     * Detects header of a file (first lines of file starting with #).
     *
-     * @throws    IOException
-     *             if I/O operation fails
+     * @throws  IOException
+     *          if I/O operation fails
     */
    private void detectHeader() throws IOException {
        header = new ArrayList<>();
@@ -409,8 +384,8 @@ public abstract class ConfigurationFile {
     * Inserts header back into file. This is required after calling {@link #save()}, because
     * it destroys the header.
     *
-     * @throws    IOException
-     *             if I/O operation fails
+     * @throws  IOException
+     *          if I/O operation fails
     */
    public void fixHeader() throws IOException {
        if (header == null) return;
@@ -421,8 +396,4 @@ public abstract class ConfigurationFile {
            Files.write(file.toPath(), content);
        }
    }
-
-    public File getFile() {
-        return file;
-    }
 }
@@ -36,18 +36,18 @@ public class YamlConfigurationFile extends ConfigurationFile {
     * Constructs new instance and attempts to load specified configuration file.
     * If file does not exist, default file is copied from {@code source}.
     *
-     * @param    source
-     *             Source to copy file from if it does not exist
-     * @param    destination
-     *             File destination to use
-     * @throws    IllegalArgumentException
-     *             if {@code destination} is null
-     * @throws    IllegalStateException
-     *             if file does not exist and source is null
-     * @throws    YAMLException
-     *             if file has invalid YAML syntax
-     * @throws    IOException
-     *             if I/O operation with the file unexpectedly fails
+     * @param   source
+     *          Source to copy file from if it does not exist
+     * @param   destination
+     *          File destination to use
+     * @throws  IllegalArgumentException
+     *          if {@code destination} is null
+     * @throws  IllegalStateException
+     *          if file does not exist and source is null
+     * @throws  YAMLException
+     *          if file has invalid YAML syntax
+     * @throws  IOException
+     *          if I/O operation with the file unexpectedly fails
     */
    public YamlConfigurationFile(InputStream source, File destination) throws YAMLException, IOException {
        super(source, destination);
@@ -11,14 +11,15 @@ public interface PlayerLoadEvent extends TabEvent {
    /**
     * Gets the player that was loaded.
     *
-     * @return the player that was loaded
+     * @return  the player that was loaded
     */
    TabPlayer getPlayer();

    /**
     * Returns true if player was loaded because they joined,
     * false if the player was loaded because tab reload command was executed
-     * @return true if player joined, false if plugin was reloaded
+     *
+     * @return  true if player joined, false if plugin was reloaded
     */
    boolean isJoin();
 }
@@ -6,11 +6,9 @@ public interface Placeholder {

    String getIdentifier();

-    boolean isTriggerMode();
-
-    void enableTriggerMode();
-
    void enableTriggerMode(Runnable onActivation, Runnable onDisable);

    void unload();
+
+    boolean isUsed();
 }
@@ -27,20 +27,27 @@ public interface PlaceholderManager {

    /**
     * Detects placeholders in text using %% pattern and returns list of all detected identifiers
-     * @param text - text to detect placeholders in
-     * @return list of detected identifiers
+     *
+     * @param   text
+     *          text to detect placeholders in
+     * @return  list of detected identifiers
     */
    List<String> detectPlaceholders(String text);

    /**
     * Adds placeholder to list of used placeholders and assigns this feature as using it,
     * which will then receive refresh() if values changes
-     * @param identifier - placeholder identifier
-     * @param feature - feature using the placeholder
+     *
+     * @param   identifier
+     *          placeholder identifier
+     * @param   feature
+     *          feature using the placeholder
     */
    void addUsedPlaceholder(String identifier, TabFeature feature);

    String findReplacement(String placeholder, String output);

    List<String> getUsedPlaceholders();
+
+    Placeholder getPlaceholder(String identifier);
 }
@@ -8,11 +8,21 @@ public interface PlayerPlaceholder extends Placeholder {

    /**
     * Calls the placeholder request function and returns the output.
-     * If the placeholder thrown an exception, it is logged in {@code placeholder-errors.log}
+     * If the placeholder threw an exception, it is logged in {@code placeholder-errors.log}
     * file and "ERROR" is returned.
-     * @param    p
-     *             player to get placeholder value for
-     * @return    value placeholder returned or "ERROR" if it threw an error
+     *
+     * @param   p
+     *          player to get placeholder value for
+     * @return  value placeholder returned or "ERROR" if it threw an error
     */
    Object request(TabPlayer p);
+
+    /**
+     * Returns last known value for given player.
+     *
+     * @param   player
+     *          player to get last value for
+     * @return  last known value for entered player
+     */
+    String getLastValue(TabPlayer player);
 }
@@ -6,5 +6,28 @@ public interface RelationalPlaceholder extends Placeholder {

    void updateValue(TabPlayer viewer, TabPlayer target, Object value);

+    /**
+     * Calls the placeholder request function and returns the output.
+     * If the placeholder threw an exception, it is logged in {@code placeholder-errors.log}
+     * file and "ERROR" is returned.
+     *
+     * @param   viewer
+     *          player looking at output of the placeholder
+     * @param   target
+     *          player the placeholder is displayed on
+     * @return  value placeholder returned or "ERROR" if it threw an error
+     */
    Object request(TabPlayer viewer, TabPlayer target);
+
+    /**
+     * Returns last known value for given players. First player is viewer,
+     * second player is target.
+     *
+     * @param   viewer
+     *          viewer of the placeholder
+     * @param   target
+     *          target who is the text displayed on
+     * @return  last known value for entered player duo
+     */
+    String getLastValue(TabPlayer viewer, TabPlayer target);
 }
@@ -4,5 +4,19 @@ public interface ServerPlaceholder extends Placeholder {

    void updateValue(Object value);

+    /**
+     * Calls the placeholder request function and returns the output.
+     * If the placeholder threw an exception, it is logged in {@code placeholder-errors.log}
+     * file and "ERROR" is returned.
+     *
+     * @return  value placeholder returned or "ERROR" if it threw an error
+     */
    Object request();
+
+    /**
+     * Returns last known value of the placeholder.
+     *
+     * @return  last known value
+     */
+    String getLastValue();
 }
@@ -1,14 +1,14 @@
 package me.neznamy.tab.api.protocol;

-import java.util.HashMap;
-import java.util.Map;
-
+import lombok.NonNull;
 import me.neznamy.tab.api.ProtocolVersion;
 import me.neznamy.tab.api.chat.EnumChatFormat;
 import me.neznamy.tab.api.chat.IChatBaseComponent;
 import me.neznamy.tab.api.chat.rgb.RGBUtils;
 import me.neznamy.tab.api.util.BiFunctionWithException;
-import me.neznamy.tab.api.util.Preconditions;
+
+import java.util.HashMap;
+import java.util.Map;

 /**
 * A class for packet building, methods are overridden in
@@ -40,30 +40,28 @@ public class PacketBuilder {
     * Converts custom packet into platform-specific packet by calling a function from
     * {@link #buildMap}.
     *
-     * @param    packet
-     *             Packet to build
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if reflection fails
+     * @param   packet
+     *          Packet to build
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if reflection fails
     */
-    public Object build(TabPacket packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
-        Preconditions.checkNotNull(packet, "packet");
-        Preconditions.checkNotNull(clientVersion, "clientVersion");
+    public Object build(@NonNull TabPacket packet, @NonNull ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return buildMap.get(packet.getClass()).apply(packet, clientVersion);
    }

    /**
     * Constructs platform-specific PacketPlayOutBoss class based on custom packet class
     *
-     * @param    packet
-     *             Custom packet to be built
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Custom packet to be built
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutBoss packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return packet;
@@ -72,13 +70,13 @@ public class PacketBuilder {
    /**
     * Constructs platform-specific PacketPlayOutChat class based on custom packet class
     *
-     * @param    packet
-     *             Custom packet to be built
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Custom packet to be built
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutChat packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return packet;
@@ -87,13 +85,13 @@ public class PacketBuilder {
    /**
     * Constructs platform-specific PacketPlayOutPlayerInfo class based on custom packet class
     *
-     * @param    packet
-     *             Custom packet to be built
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Custom packet to be built
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutPlayerInfo packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return packet;
@@ -102,13 +100,13 @@ public class PacketBuilder {
    /**
     * Constructs platform-specific PacketPlayOutPlayerListHeaderFooter class based on custom packet class
     *
-     * @param    packet
-     *             Custom packet to be built
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Custom packet to be built
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutPlayerListHeaderFooter packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return packet;
@@ -117,13 +115,13 @@ public class PacketBuilder {
    /**
     * Constructs platform-specific PacketPlayOutScoreboardDisplayObjective class based on custom packet class
     *
-     * @param    packet
-     *             Custom packet to be built
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Custom packet to be built
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutScoreboardDisplayObjective packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return packet;
@@ -132,13 +130,13 @@ public class PacketBuilder {
    /**
     * Constructs platform-specific PacketPlayOutScoreboardObjective class based on custom packet class
     *
-     * @param    packet
-     *             Custom packet to be built
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Custom packet to be built
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutScoreboardObjective packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return packet;
@@ -147,13 +145,13 @@ public class PacketBuilder {
    /**
     * Constructs platform-specific PacketPlayOutScoreboardScore class based on custom packet class
     *
-     * @param    packet
-     *             Custom packet to be built
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Custom packet to be built
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutScoreboardScore packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return packet;
@@ -162,13 +160,13 @@ public class PacketBuilder {
    /**
     * Constructs platform-specific PacketPlayOutScoreboardTeam class based on custom packet class
     *
-     * @param    packet
-     *             Custom packet to be built
-     * @param    clientVersion
-     *             Protocol version of player to build the packet for
-     * @return    Platform-specific packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Custom packet to be built
+     * @param   clientVersion
+     *          Protocol version of player to build the packet for
+     * @return  Platform-specific packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutScoreboardTeam packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return packet;
@@ -179,11 +177,12 @@ public class PacketBuilder {
     * and translates RGB to legacy colors. If string is not that long, the original string is returned.
     * RGB codes are converted into legacy, since cutting is only needed for &lt;1.13.
     * If {@code string} is {@code null}, empty string is returned.
-     * @param    string
-     *             String to cut
-     * @param    length
-     *             Length to cut to
-     * @return    string cut to {@code length} characters
+     *
+     * @param   string
+     *          String to cut
+     * @param   length
+     *          Length to cut to
+     * @return  string cut to {@code length} characters
     */
    public String cutTo(String string, int length) {
        if (string == null) return "";
@@ -201,17 +200,17 @@ public class PacketBuilder {
    }

    /**
-     * If {@code clientVersion} is >= 1.13, creates a component from given text and returns
+     * If {@code clientVersion} is &gt;= 1.13, creates a component from given text and returns
     * it as a serialized component, which BungeeCord uses.
     * <p>
     * If {@code clientVersion} is &lt; 1.12, the text is cut to {@code length} characters if
     * needed and returned.
     *
-     * @param    text
-     *             Text to convert
-     * @param    clientVersion
-     *             Version of player to convert text for
-     * @return    serialized component for 1.13+ clients, cut string for 1.12-
+     * @param   text
+     *          Text to convert
+     * @param   clientVersion
+     *          Version of player to convert text for
+     * @return  serialized component for 1.13+ clients, cut string for 1.12-
     */
    public String jsonOrCut(String text, ProtocolVersion clientVersion, int length) {
        if (text == null) return null;
@@ -226,13 +225,13 @@ public class PacketBuilder {
     * Converts platform-specific instance of player info packet into
     * {@link PacketPlayOutPlayerInfo} object.
     *
-     * @param    packet
-     *             platform-specific info packet
-     * @param    clientVersion
-     *             Version of client receiving the packet
-     * @return    The packet converted into {@link PacketPlayOutPlayerInfo}
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          platform-specific info packet
+     * @param   clientVersion
+     *          Version of client receiving the packet
+     * @return  The packet converted into {@link PacketPlayOutPlayerInfo}
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public PacketPlayOutPlayerInfo readPlayerInfo(Object packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        return null;
@@ -242,11 +241,11 @@ public class PacketBuilder {
     * Converts platform-specific instance of objective packet into
     * {@link PacketPlayOutScoreboardObjective} object.
     *
-     * @param    packet
-     *             platform-specific objective packet
-     * @return    The packet converted into {@link PacketPlayOutScoreboardObjective}
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          platform-specific objective packet
+     * @return  The packet converted into {@link PacketPlayOutScoreboardObjective}
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public PacketPlayOutScoreboardObjective readObjective(Object packet) throws ReflectiveOperationException {
        return null;
@@ -256,11 +255,11 @@ public class PacketBuilder {
     * Converts platform-specific instance of display objective packet into
     * {@link PacketPlayOutScoreboardDisplayObjective} object.
     *
-     * @param    packet
-     *             platform-specific display objective packet
-     * @return    The packet converted into {@link PacketPlayOutScoreboardDisplayObjective}
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          platform-specific display objective packet
+     * @return  The packet converted into {@link PacketPlayOutScoreboardDisplayObjective}
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public PacketPlayOutScoreboardDisplayObjective readDisplayObjective(Object packet) throws ReflectiveOperationException {
        return null;
@@ -1,21 +1,23 @@
 package me.neznamy.tab.api.protocol;

-import java.util.UUID;
-
+import lombok.Data;
+import lombok.NonNull;
 import me.neznamy.tab.api.bossbar.BarColor;
 import me.neznamy.tab.api.bossbar.BarStyle;
-import me.neznamy.tab.api.util.Preconditions;
+
+import java.util.UUID;

 /**
 * A class representing platform specific packet class
 */
+@Data
 public class PacketPlayOutBoss implements TabPacket {

    /** UUID of the BossBar */
    private final UUID id;

    /** Action of this packet */
-    private final Action action;
+    private Action action;

    /** BossBar title */
    private String name;
@@ -42,22 +44,18 @@ public class PacketPlayOutBoss implements TabPacket {
     * Constructs new instance with given parameters and
     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action}.ADD action
     *
-     * @param    id
-     *             BossBar uuid
-     * @param    name
-     *             BossBar title
-     * @param    pct
-     *             BossBar progress
-     * @param    color
-     *             BossBar color
-     * @param    overlay
-     *             BossBar style
+     * @param   id
+     *          BossBar uuid
+     * @param   name
+     *          BossBar title
+     * @param   pct
+     *          BossBar progress
+     * @param   color
+     *          BossBar color
+     * @param   overlay
+     *          BossBar style
     */
-    public PacketPlayOutBoss(UUID id, String name, float pct, BarColor color, BarStyle overlay) {
-        Preconditions.checkNotNull(id, "uuid");
-        Preconditions.checkNotNull(name, "title");
-        Preconditions.checkNotNull(color, "color");
-        Preconditions.checkNotNull(overlay, "style");
+    public PacketPlayOutBoss(@NonNull UUID id, @NonNull String name, float pct, @NonNull BarColor color, @NonNull BarStyle overlay) {
        this.action = Action.ADD;
        this.id = id;
        this.name = name;
@@ -68,28 +66,26 @@ public class PacketPlayOutBoss implements TabPacket {

    /**
     * Constructs new instance with given parameters and
-     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action}.REMOVE action
+     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action#REMOVE} action
     *
-     * @param    id
-     *             BossBar uuid
+     * @param   id
+     *          BossBar uuid
     */
-    public PacketPlayOutBoss(UUID id) {
-        Preconditions.checkNotNull(id, "uuid");
+    public PacketPlayOutBoss(@NonNull UUID id) {
        this.action = Action.REMOVE;
        this.id = id;
    }

    /**
     * Constructs new instance with given parameters and
-     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action}.UPDATE_PCT action
+     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action#UPDATE_PCT} action
     *
-     * @param    id
-     *             BossBar uuid
-     * @param    pct
-     *             BossBar progress
+     * @param   id
+     *          BossBar uuid
+     * @param   pct
+     *          BossBar progress
     */
-    public PacketPlayOutBoss(UUID id, float pct) {
-        Preconditions.checkNotNull(id, "uuid");
+    public PacketPlayOutBoss(@NonNull UUID id, float pct) {
        this.action = Action.UPDATE_PCT;
        this.id = id;
        this.pct = pct;
@@ -97,16 +93,14 @@ public class PacketPlayOutBoss implements TabPacket {

    /**
     * Constructs new instance with given parameters and
-     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action}.UPDATE_NAME action
+     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action#UPDATE_NAME} action
     *
-     * @param    id
-     *             BossBar uuid
-     * @param    name
-     *             BossBar title
+     * @param   id
+     *          BossBar uuid
+     * @param   name
+     *          BossBar title
     */
-    public PacketPlayOutBoss(UUID id, String name) {
-        Preconditions.checkNotNull(id, "uuid");
-        Preconditions.checkNotNull(name, "title");
+    public PacketPlayOutBoss(@NonNull UUID id, @NonNull String name) {
        this.action = Action.UPDATE_NAME;
        this.id = id;
        this.name = name;
@@ -114,19 +108,16 @@ public class PacketPlayOutBoss implements TabPacket {

    /**
     * Constructs new instance with given parameters and
-     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action}.UPDATE_STYLE action
+     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action#UPDATE_STYLE} action
     *
-     * @param    id
-     *             BossBar uuid
-     * @param    color
-     *             BossBar color
-     * @param    overlay
-     *             BossBar style
+     * @param   id
+     *          BossBar uuid
+     * @param   color
+     *          BossBar color
+     * @param   overlay
+     *          BossBar style
     */
-    public PacketPlayOutBoss(UUID id, BarColor color, BarStyle overlay) {
-        Preconditions.checkNotNull(id, "uuid");
-        Preconditions.checkNotNull(color, "color");
-        Preconditions.checkNotNull(overlay, "style");
+    public PacketPlayOutBoss(@NonNull UUID id, @NonNull BarColor color, @NonNull BarStyle overlay) {
        this.action = Action.UPDATE_STYLE;
        this.id = id;
        this.color = color;
@@ -135,17 +126,16 @@ public class PacketPlayOutBoss implements TabPacket {

    /**
     * Constructs new instance with given parameters and
-     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action}.UPDATE_PROPERTIES action
+     * {@link me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action#UPDATE_PROPERTIES} action
     *
-     * @param    darkenScreen
-     *             Darken screen flag
-     * @param    playMusic
-     *             Play music flag
-     * @param    createWorldFog
-     *             Create fog flag
+     * @param   darkenScreen
+     *          Darken screen flag
+     * @param   playMusic
+     *          Play music flag
+     * @param   createWorldFog
+     *          Create fog flag
     */
-    public PacketPlayOutBoss(UUID id, boolean darkenScreen, boolean playMusic, boolean createWorldFog) {
-        Preconditions.checkNotNull(id, "uuid");
+    public PacketPlayOutBoss(@NonNull UUID id, boolean darkenScreen, boolean playMusic, boolean createWorldFog) {
        this.action = Action.UPDATE_PROPERTIES;
        this.id = id;
        this.darkenScreen = darkenScreen;
@@ -159,7 +149,7 @@ public class PacketPlayOutBoss implements TabPacket {
     * {@link #darkenScreen} adds {@code 1}, {@link #playMusic} {@code 2} and {@link #darkenScreen} {@code 4}
     * to the final value.
     *
-     * @return the bitmask
+     * @return  the bitmask
     */
    public byte getFlags(){
        byte value = 0;
@@ -169,114 +159,6 @@ public class PacketPlayOutBoss implements TabPacket {
        return value;
    }

-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutBoss{id=%s,operation=%s,name=%s,pct=%s,color=%s,overlay=%s,darkenScreen=%s,playMusic=%s,createWorldFog=%s}",
-                id, action, name, pct, color, overlay, darkenScreen, playMusic, createWorldFog);
-    }
-
-    /**
-     * Returns {@link #color}
-     * @return    color
-     */
-    public BarColor getColor() {
-        return color;
-    }
-
-    /**
-     * Returns {@link #overlay}
-     * @return    style
-     */
-    public BarStyle getOverlay() {
-        return overlay;
-    }
-
-    /**
-     * Returns {@link #name}
-     * @return    name
-     */
-    public String getName() {
-        return name;
-    }
-
-    /**
-     * Returns {@link #id}
-     * @return    id
-     */
-    public UUID getId() {
-        return id;
-    }
-
-    /**
-     * Returns {@link #pct}
-     * @return    progress
-     */
-    public float getPct() {
-        return pct;
-    }
-
-    /**
-     * Returns {@link #action}
-     * @return    packet action
-     */
-    public Action getAction() {
-        return action;
-    }
-
-    /**
-     * Returns {@link #darkenScreen}
-     * @return    darkenScreen
-     */
-    public boolean isDarkenScreen() {
-        return darkenScreen;
-    }
-
-    /**
-     * Returns {@link #createWorldFog}
-     * @return    createWorldFog
-     */
-    public boolean isCreateWorldFog() {
-        return createWorldFog;
-    }
-
-    /**
-     * Returns {@link #playMusic}
-     * @return    playMusic
-     */
-    public boolean isPlayMusic() {
-        return playMusic;
-    }
-
-    /**
-     * Sets {@link #darkenScreen} to specified value
-     *
-     * @param    darkenScreen
-     *             Darken screen flag
-     */
-    public void setDarkenScreen(boolean darkenScreen) {
-        this.darkenScreen = darkenScreen;
-    }
-
-    /**
-     * Sets {@link #createWorldFog} to specified value
-     *
-     * @param    createWorldFog
-     *             Create fog flag
-     */
-    public void setCreateWorldFog(boolean createWorldFog) {
-        this.createWorldFog = createWorldFog;
-    }
-
-    /**
-     * Sets {@link #playMusic} to specified value
-     *
-     * @param    playMusic
-     *             Play music flag
-     */
-    public void setPlayMusic(boolean playMusic) {
-        this.playMusic = playMusic;
-    }
-
    /**
     * An enum representing all valid boss packet actions.
     * Calling ordinal() will return action's network ID.
@@ -1,54 +1,20 @@
 package me.neznamy.tab.api.protocol;

+import lombok.Data;
+import lombok.NonNull;
 import me.neznamy.tab.api.chat.IChatBaseComponent;
-import me.neznamy.tab.api.util.Preconditions;

 /**
 * A class representing platform specific packet class
 */
+@Data
 public class PacketPlayOutChat implements TabPacket {

    /** Message to be sent */
-    private final IChatBaseComponent message;
+    @NonNull private final IChatBaseComponent message;

    /** Message position */
-    private final ChatMessageType type;
-
-    /**
-     * Constructs new instance with given parameters
-     * 
-     * @param    message
-     *             Chat message to be sent
-     * @param    type
-     *             Message position
-     */
-    public PacketPlayOutChat(IChatBaseComponent message, ChatMessageType type) {
-        Preconditions.checkNotNull(message, "message");
-        Preconditions.checkNotNull(type, "message type");
-        this.message = message;
-        this.type = type;
-    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutChat{message=%s,type=%s}", message, type);
-    }
-
-    /**
-     * Returns {@link #message}
-     * @return    message
-     */
-    public IChatBaseComponent getMessage() {
-        return message;
-    }
-
-    /**
-     * Returns {@link #type}
-     * @return    type
-     */
-    public ChatMessageType getType() {
-        return type;
-    }
+    @NonNull private final ChatMessageType type;

    /**
     * An enum representing positions of a chat message
@@ -1,19 +1,23 @@
 package me.neznamy.tab.api.protocol;

+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NonNull;
+import me.neznamy.tab.api.chat.IChatBaseComponent;
+
 import java.util.Arrays;
+import java.util.EnumSet;
 import java.util.List;
 import java.util.UUID;

-import me.neznamy.tab.api.chat.IChatBaseComponent;
-import me.neznamy.tab.api.util.Preconditions;
-
 /**
 * A class representing platform specific packet class
 */
+@Data @AllArgsConstructor
 public class PacketPlayOutPlayerInfo implements TabPacket {

-    /** Packet action */
-    private final EnumPlayerInfoAction action;
+    /** Packet actions */
+    private final EnumSet<EnumPlayerInfoAction> actions;

    /** List of affected entries */
    private final List<PlayerInfoData> entries;
@@ -21,59 +25,68 @@ public class PacketPlayOutPlayerInfo implements TabPacket {
    /**
     * Constructs new instance with given parameters.
     * 
-     * @param    action
-     *             Packet action
-     * @param    entries
-     *             Affected entries
+     * @param   action
+     *          Packet action
+     * @param   entries
+     *          Affected entries
     */
    public PacketPlayOutPlayerInfo(EnumPlayerInfoAction action, PlayerInfoData... entries) {
-        Preconditions.checkNotNull(action, "action");
-        Preconditions.checkNotNull(entries, "entries");
-        this.action = action;
-        this.entries = Arrays.asList(entries);
+        this(action, Arrays.asList(entries));
    }

    /**
     * Constructs new instance with given parameters.
     * 
-     * @param    action
-     *             Packet action
-     * @param    entries
-     *             Affected entries
+     * @param   action
+     *          Packet action
+     * @param   entries
+     *          Affected entries
     */
-    public PacketPlayOutPlayerInfo(EnumPlayerInfoAction action, List<PlayerInfoData> entries) {
-        Preconditions.checkNotNull(action, "action");
-        Preconditions.checkNotNull(entries, "entries");
-        this.action = action;
+    public PacketPlayOutPlayerInfo(@NonNull EnumPlayerInfoAction action, @NonNull List<PlayerInfoData> entries) {
+        if (action == EnumPlayerInfoAction.ADD_PLAYER) {
+            actions = EnumSet.of(EnumPlayerInfoAction.ADD_PLAYER,
+                    EnumPlayerInfoAction.INITIALIZE_CHAT,
+                    EnumPlayerInfoAction.UPDATE_GAME_MODE,
+                    EnumPlayerInfoAction.UPDATE_LISTED,
+                    EnumPlayerInfoAction.UPDATE_LATENCY,
+                    EnumPlayerInfoAction.UPDATE_DISPLAY_NAME);
+        } else {
+            this.actions = EnumSet.of(action);
+        }
        this.entries = entries;
    }

-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutPlayerInfo{action=%s,entries=%s}", action, entries);
-    }
-
    /**
-     * Returns {@link #action}
-     * @return    packet action
+     * Constructs new instance with given parameters.
+     *
+     * @param   actions
+     *          Packet actions
+     * @param   entries
+     *          Affected entries
     */
-    public EnumPlayerInfoAction getAction() {
-        return action;
-    }
-
-    /**
-     * Returns {@link #entries}
-     * @return    affected entries
-     */
-    public List<PlayerInfoData> getEntries() {
-        return entries;
+    public PacketPlayOutPlayerInfo(@NonNull EnumSet<EnumPlayerInfoAction> actions, @NonNull PlayerInfoData... entries) {
+        this.actions = actions;
+        this.entries = Arrays.asList(entries);
    }

    /**
     * A subclass representing player list entry
     */
+    @Data @AllArgsConstructor
    public static class PlayerInfoData {

+        /** Real name of affected player */
+        private String name;
+
+        /** Player UUID */
+        @NonNull private UUID uniqueId;
+
+        /** Player's skin, null for empty skin */
+        private Skin skin;
+
+        /** I have no idea what this is */
+        private boolean listed;
+
        /** Latency */
        private int latency;

@@ -86,215 +99,75 @@ public class PacketPlayOutPlayerInfo implements TabPacket {
         */
        private IChatBaseComponent displayName;

-        /** Real name of affected player */
-        private String name;
+        /** Chat session ID */
+        private UUID chatSessionId;

-        /** Player UUID */
-        private UUID uniqueId;
-
-        /** Player's skin, null for empty skin */
-        private Skin skin;
+        /** Player's chat signing key */
+        private Object profilePublicKey;

        /**
         * Constructs new instance with given parameters. Suitable for 
-         * {@link EnumPlayerInfoAction}.ADD_PLAYER action
+         * {@link EnumPlayerInfoAction#UPDATE_GAME_MODE} action
         * 
-         * @param    name
-         *             Player's name
-         * @param    uniqueId
-         *             Player's uuid
-         * @param    skin
-         *             Player's platform-specific skin object
-         * @param    latency
-         *             Player's ping
-         * @param    gameMode
-         *             Player's GameMode
-         * @param    displayName
-         *             Player's display name
+         * @param   uniqueId
+         *          Player's uuid
+         * @param   gameMode
+         *          Player's GameMode
         */
-        public PlayerInfoData(String name, UUID uniqueId, Skin skin, int latency, EnumGamemode gameMode, IChatBaseComponent displayName) {
-            Preconditions.checkNotNull(uniqueId, "uuid");
-            this.name = name;
-            this.uniqueId = uniqueId;
-            this.skin = skin;
-            this.latency = latency;
-            this.gameMode = gameMode;
-            this.displayName = displayName;
-        }
-
-        /**
-         * Constructs new instance with given parameters. Suitable for 
-         * {@link EnumPlayerInfoAction}.UPDATE_GAME_MODE action
-         * 
-         * @param    uniqueId
-         *             Player's uuid
-         * @param    gameMode
-         *             Player's GameMode
-         */
-        public PlayerInfoData(UUID uniqueId, EnumGamemode gameMode) {
-            Preconditions.checkNotNull(uniqueId, "uuid");
+        public PlayerInfoData(@NonNull UUID uniqueId, EnumGamemode gameMode) {
            this.uniqueId = uniqueId;
            this.gameMode = gameMode;
        }

        /**
         * Constructs new instance with given parameters. Suitable for 
-         * {@link EnumPlayerInfoAction}.UPDATE_LATENCY action
+         * {@link EnumPlayerInfoAction#UPDATE_LATENCY} action
         * 
-         * @param    uniqueId
-         *             Player's uuid
-         * @param    latency
-         *             Player's ping
+         * @param   uniqueId
+         *          Player's uuid
+         * @param   latency
+         *          Player's ping
         */
-        public PlayerInfoData(UUID uniqueId, int latency) {
-            Preconditions.checkNotNull(uniqueId, "uuid");
+        public PlayerInfoData(@NonNull UUID uniqueId, int latency) {
            this.uniqueId = uniqueId;
            this.latency = latency;
        }

        /**
         * Constructs new instance with given parameters. Suitable for 
-         * {@link EnumPlayerInfoAction}.UPDATE_DISPLAY_NAME action
+         * {@link EnumPlayerInfoAction#UPDATE_DISPLAY_NAME} action
         * 
-         * @param    uniqueId
-         *             Player's uuid
-         * @param    displayName
-         *             Player's display name
+         * @param   uniqueId
+         *          Player's uuid
+         * @param   displayName
+         *          Player's display name
         */
-        public PlayerInfoData(UUID uniqueId, IChatBaseComponent displayName) {
-            Preconditions.checkNotNull(uniqueId, "uuid");
+        public PlayerInfoData(@NonNull UUID uniqueId, IChatBaseComponent displayName) {
            this.uniqueId = uniqueId;
            this.displayName = displayName;
        }

        /**
         * Constructs new instance with given parameter. Suitable for 
-         * {@link EnumPlayerInfoAction}.REMOVE_PLAYER action
+         * {@link EnumPlayerInfoAction#REMOVE_PLAYER} action
         * 
-         * @param    uniqueId
-         *             Player's uuid
+         * @param   uniqueId
+         *          Player's uuid
         */
-        public PlayerInfoData(UUID uniqueId) {
+        public PlayerInfoData(@NonNull UUID uniqueId) {
            this.uniqueId = uniqueId;
        }
-
-        @Override
-        public String toString() {
-            return String.format("PlayerInfoData{latency=%s,gameMode=%s,displayName=%s,name=%s,uniqueId=%s,skin=%s}",
-                    latency, gameMode, displayName, name, uniqueId, skin);
-        }
-
-        /**
-         * Returns {@link #latency}
-         * @return    latency
-         */
-        public int getLatency() {
-            return latency;
-        }
-
-        /**
-         * Sets {@link #latency} to specified value
-         * @param    latency
-         *             Latency to use
-         */
-        public void setLatency(int latency) {
-            this.latency = latency;
-        }
-
-        /**
-         * Returns {@link #displayName}
-         * @return    displayName
-         */
-        public IChatBaseComponent getDisplayName() {
-            return displayName;
-        }
-
-        /**
-         * Sets {@link #displayName} to specified value
-         * @param    displayName
-         *             Display name to use
-         */
-        public void setDisplayName(IChatBaseComponent displayName) {
-            this.displayName = displayName;
-        }
-
-        /**
-         * Returns {@link #uniqueId}
-         * @return    uniqueId
-         */
-        public UUID getUniqueId() {
-            return uniqueId;
-        }
-
-        /**
-         * Sets {@link #uniqueId} to specified value
-         * @param    uniqueId
-         *             UUID to use
-         */
-        public void setUniqueId(UUID uniqueId) {
-            this.uniqueId = uniqueId;
-        }
-
-        /**
-         * Returns {@link #name}
-         * @return    name
-         */
-        public String getName() {
-            return name;
-        }
-
-        /**
-         * Sets {@link #name} to specified value
-         * @param    name
-         *             name to use
-         */
-        public void setName(String name) {
-            this.name = name;
-        }
-
-        /**
-         * Returns {@link #gameMode}
-         * @return    gameMode
-         */
-        public EnumGamemode getGameMode() {
-            return gameMode;
-        }
-
-        /**
-         * Sets {@link #gameMode} to specified value
-         * @param    gameMode
-         *             GameMode to use
-         */
-        public void setGameMode(EnumGamemode gameMode) {
-            this.gameMode = gameMode;
-        }
-
-        /**
-         * Returns {@link #skin}
-         * @return    skin
-         */
-        public Skin getSkin() {
-            return skin;
-        }
-
-        /**
-         * Sets {@link #skin} to specified value
-         * @param    skin
-         *             Skin to use
-         */
-        public void setSkin(Skin skin) {
-            this.skin = skin;
-        }
    }

    /**
     * En enum representing packet action
-     * Calling ordinal() will return action's network ID.
     */
    public enum EnumPlayerInfoAction {

        ADD_PLAYER,
+        INITIALIZE_CHAT,
        UPDATE_GAME_MODE,
+        UPDATE_LISTED,
        UPDATE_LATENCY,
        UPDATE_DISPLAY_NAME,
        REMOVE_PLAYER
@@ -1,68 +1,33 @@
 package me.neznamy.tab.api.protocol;

+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NonNull;
 import me.neznamy.tab.api.chat.IChatBaseComponent;
-import me.neznamy.tab.api.util.Preconditions;

 /**
 * A class representing platform specific packet class
 */
+@Data @AllArgsConstructor
 public class PacketPlayOutPlayerListHeaderFooter implements TabPacket {

    /** TabList header */
-    private final IChatBaseComponent header;
+    @NonNull private final IChatBaseComponent header;

    /** TabList footer */
-    private final IChatBaseComponent footer;
+    @NonNull private final IChatBaseComponent footer;

    /**
     * Constructs new instance with given parameters. They are converted to {@link IChatBaseComponent}
     * using {@link IChatBaseComponent#optimizedComponent(String)} method.
     * 
-     * @param    header
-     *             TabList header
-     * @param    footer
-     *             TabList footer
+     * @param   header
+     *          TabList header
+     * @param   footer
+     *          TabList footer
     */
-    public PacketPlayOutPlayerListHeaderFooter(String header, String footer) {
-        Preconditions.checkNotNull(header, "header");
-        Preconditions.checkNotNull(footer, "footer");
+    public PacketPlayOutPlayerListHeaderFooter(@NonNull String header, @NonNull String footer) {
        this.header = IChatBaseComponent.optimizedComponent(header);
        this.footer = IChatBaseComponent.optimizedComponent(footer);
    }
-
-    /**
-     * Constructs new instance with given parameters.
-     * 
-     * @param    header
-     *             TabList header
-     * @param    footer
-     *             TabList footer
-     */
-    public PacketPlayOutPlayerListHeaderFooter(IChatBaseComponent header, IChatBaseComponent footer) {
-        Preconditions.checkNotNull(header, "header");
-        Preconditions.checkNotNull(footer, "footer");
-        this.header = header;
-        this.footer = footer;
-    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutPlayerListHeaderFooter{header=%s,footer=%s}", header, footer);
-    }
-
-    /**
-     * Returns {@link #header}
-     * @return    header
-     */
-    public IChatBaseComponent getHeader() {
-        return header;
-    }
-
-    /**
-     * Returns {@link #footer}
-     * @return    footer
-     */
-    public IChatBaseComponent getFooter() {
-        return footer;
-    }
 }
@@ -1,10 +1,12 @@
 package me.neznamy.tab.api.protocol;

-import me.neznamy.tab.api.util.Preconditions;
+import lombok.Data;
+import lombok.NonNull;

 /**
 * A class representing platform specific packet class
 */
+@Data
 public class PacketPlayOutScoreboardDisplayObjective implements TabPacket {

    /**
@@ -16,42 +18,5 @@ public class PacketPlayOutScoreboardDisplayObjective implements TabPacket {
    private final int slot;

    /** Up to 16 characters long objective name */
-    private final String objectiveName;
-
-    /**
-     * Constructs new instance with given parameters
-     * @param    slot
-     *             Display slot
-     * @param    objectiveName
-     *             Internal name of the objective
-     * @throws    IllegalArgumentException
-     *             if {@code objectiveName} is null or longer than 16 characters
-     */
-    public PacketPlayOutScoreboardDisplayObjective(int slot, String objectiveName) {
-        Preconditions.checkNotNull(objectiveName, "objective name");
-        Preconditions.checkMaxLength(objectiveName, 16, "objective name");
-        this.slot = slot;
-        this.objectiveName = objectiveName;
-    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutScoreboardDisplayObjective{slot=%s,objectiveName=%s}", slot, objectiveName);
-    }
-
-    /**
-     * Returns {@link #slot}
-     * @return    slot
-     */
-    public int getSlot() {
-        return slot;
-    }
-
-    /**
-     * Returns {@link #objectiveName}
-     * @return    objectiveName
-     */
-    public String getObjectiveName() {
-        return objectiveName;
-    }
+    @NonNull private final String objectiveName;
 }
@@ -1,21 +1,16 @@
 package me.neznamy.tab.api.protocol;

+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NonNull;
 import me.neznamy.tab.api.util.Preconditions;

 /**
 * A class representing platform specific packet class
 */
+@Data @AllArgsConstructor
 public class PacketPlayOutScoreboardObjective implements TabPacket {

-    /** Up to 16 characters long objective name */
-    private final String objectiveName;
-
-    /** Display name */
-    private final String displayName;
-
-    /** Display type, only takes effect in PlayerList */
-    private final EnumScoreboardHealthDisplay renderType;
-
    /**
     * Packet action.
     * 0 = register,
@@ -24,39 +19,24 @@ public class PacketPlayOutScoreboardObjective implements TabPacket {
     */
    private final int action;

-    /**
-     * Constructs new instance with given parameters.
-     *
-     * @param    action
-     *             Packet action (0 = add, 1 = remove, 2 = update title)
-     * @param    objectiveName
-     *             objective name, up to 16 characters long
-     * @param displayName - title
-     * @param renderType - display type
-     * @throws    IllegalArgumentException
-     *             if {@code objectiveName} is null or longer than 16 characters
-     */
-    public PacketPlayOutScoreboardObjective(int action, String objectiveName, String displayName, EnumScoreboardHealthDisplay renderType) {
-        Preconditions.checkRange(action, 0, 2, "action");
-        Preconditions.checkNotNull(objectiveName, "objective name");
-        Preconditions.checkMaxLength(objectiveName, 16, "objective name");
-        Preconditions.checkNotNull(renderType, "render type");
-        this.objectiveName = objectiveName;
-        this.displayName = displayName;
-        this.renderType = renderType;
-        this.action = action;
-    }
+    /** Up to 16 characters long objective name */
+    @NonNull private final String objectiveName;
+
+    /** Display name */
+    private final String displayName;
+
+    /** Display type, only takes effect in PlayerList */
+    private final EnumScoreboardHealthDisplay renderType;

    /**
     * Constructs new packet with given objective name and 1 (unregister) action.
     *
-     * @param    objectiveName
-     *             objective name, up to 16 characters long
-     * @throws    IllegalArgumentException
-     *             if {@code objectiveName} is null or longer than 16 characters
+     * @param   objectiveName
+     *          objective name, up to 16 characters long
+     * @throws  IllegalArgumentException
+     *          if {@code objectiveName} is null or longer than 16 characters
     */
-    public PacketPlayOutScoreboardObjective(String objectiveName) {
-        Preconditions.checkNotNull(objectiveName, "objective name");
+    public PacketPlayOutScoreboardObjective(@NonNull String objectiveName) {
        Preconditions.checkMaxLength(objectiveName, 16, "objective name");
        this.objectiveName = objectiveName;
        this.displayName = ""; //avoiding NPE on <1.7
@@ -64,44 +44,6 @@ public class PacketPlayOutScoreboardObjective implements TabPacket {
        this.renderType = null;
    }

-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutScoreboardObjective{objectiveName=%s,displayName=%s,renderType=%s,method=%s}",
-                objectiveName, displayName, renderType, action);
-    }
-
-    /**
-     * Returns {@link #displayName}
-     * @return    displayName
-     */
-    public String getDisplayName() {
-        return displayName;
-    }
-
-    /**
-     * Returns {@link #objectiveName}
-     * @return    objectiveName
-     */
-    public String getObjectiveName() {
-        return objectiveName;
-    }
-
-    /**
-     * Returns {@link #renderType}
-     * @return    renderType
-     */
-    public EnumScoreboardHealthDisplay getRenderType() {
-        return renderType;
-    }
-
-    /**
-     * Returns {@link #action}
-     * @return    packet action
-     */
-    public int getAction() {
-        return action;
-    }
-
    /**
     * An enum representing available display types.
     * They only take effect in PlayerList position.
@@ -1,87 +1,26 @@
 package me.neznamy.tab.api.protocol;

-import me.neznamy.tab.api.util.Preconditions;
+import lombok.Data;
+import lombok.NonNull;

 /**
 * A class representing platform specific packet class
 */
+@Data
 public class PacketPlayOutScoreboardScore implements TabPacket {

    /** Packet action */
-    private final Action action;
+    @NonNull private final Action action;

    /** Objective name */
-    private final String objectiveName;
+    @NonNull private final String objectiveName;

    /** Affected player */
-    private final String player;
+    @NonNull private final String player;

    /** Player's score */
    private final int score;

-    /**
-     * Constructs new instance with given parameters
-     *
-     * @param    action
-     *             Packet action
-     * @param    objectiveName
-     *             Objective name
-     * @param    player
-     *             Affected player
-     * @param    score
-     *             Player's score
-     * @throws    IllegalArgumentException
-     *             if {@code objectiveName} is null or longer than 16 characters
-     */
-    public PacketPlayOutScoreboardScore(Action action, String objectiveName, String player, int score) {
-        Preconditions.checkNotNull(action, "action");
-        Preconditions.checkNotNull(objectiveName, "objective name");
-        Preconditions.checkMaxLength(objectiveName, 16, "objective name");
-        Preconditions.checkNotNull(player, "player");
-        this.action = action;
-        this.objectiveName = objectiveName;
-        this.player = player;
-        this.score = score;
-    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutScoreboardScore{action=%s,objectiveName=%s,player=%s,score=%s}",
-                action, objectiveName, player, score);
-    }
-
-    /**
-     * Returns {@link #action}
-     * @return    packet action
-     */
-    public Action getAction() {
-        return action;
-    }
-
-    /**
-     * Returns {@link #objectiveName}
-     * @return    objective name
-     */
-    public String getObjectiveName() {
-        return objectiveName;
-    }
-
-    /**
-     * Returns {@link #player}
-     * @return    player
-     */
-    public String getPlayer() {
-        return player;
-    }
-
-    /**
-     * Returns {@link #score}
-     * @return    score
-     */
-    public int getScore() {
-        return score;
-    }
-
    /**
     * An enum representing action types
     */
@@ -1,14 +1,17 @@
 package me.neznamy.tab.api.protocol;

+import lombok.Data;
+import lombok.NonNull;
+import me.neznamy.tab.api.chat.EnumChatFormat;
+import me.neznamy.tab.api.util.Preconditions;
+
 import java.util.Collection;
 import java.util.Collections;

-import me.neznamy.tab.api.chat.EnumChatFormat;
-import me.neznamy.tab.api.util.Preconditions;
-
 /**
 * A class representing platform specific packet class
 */
+@Data
 public class PacketPlayOutScoreboardTeam implements TabPacket {

    /**
@@ -18,12 +21,12 @@ public class PacketPlayOutScoreboardTeam implements TabPacket {
     * Players with teams are below them, players of the same team are
     * sorted alphabetically by usernames.
     */
-    private final String name;
+    @NonNull private final String name;

-    /** Team prefix, limited to 16 characters, on <1.13 */
+    /** Team prefix, limited to 16 characters, on &lt;1.13 */
    private String playerPrefix;

-    /** Team suffix, limited to 16 characters, on <1.13 */
+    /** Team suffix, limited to 16 characters, on &lt;1.13 */
    private String playerSuffix;

    /** 
@@ -46,10 +49,10 @@ public class PacketPlayOutScoreboardTeam implements TabPacket {

    /** 
     * Affected entities. For players, it is their name, for other entities their UUID
-     * Player name length is limited to 16 characters for <1.8, 40 characters since 1.8.
+     * Player name length is limited to 16 characters for &lt;1.8, 40 characters since 1.8.
     * Entity UUID option was added in 1.8.
     */
-    private Collection<String> players = Collections.emptyList();
+    @NonNull private Collection<String> players = Collections.emptyList();

    /**
     * Packet action.
@@ -72,16 +75,15 @@ public class PacketPlayOutScoreboardTeam implements TabPacket {
     * Constructs new instance with given parameters. Private constructor used
     * internally to validate team name and set action.
     * 
-     * @param    action
-     *             Packet action (0 = create team, 1 = remove team, 2 = update team info,
-     *             3 = add entries, 4 = remove entries)
-     * @param    name
-     *             Team name, up to 16 characters long
-     * @throws    IllegalArgumentException
-     *             if {@code name} is null, empty or longer than 16 characters
+     * @param   action
+     *          Packet action (0 = create team, 1 = remove team, 2 = update team info,
+     *          3 = add entries, 4 = remove entries)
+     * @param   name
+     *          Team name, up to 16 characters long
+     * @throws  IllegalArgumentException
+     *          if {@code name} is null, empty or longer than 16 characters
     */
-    private PacketPlayOutScoreboardTeam(int action, String name) {
-        Preconditions.checkNotNull(name, "team name");
+    private PacketPlayOutScoreboardTeam(int action, @NonNull String name) {
        Preconditions.checkMaxLength(name, 16, "team name");
        this.action = action;
        this.name = name;
@@ -90,30 +92,26 @@ public class PacketPlayOutScoreboardTeam implements TabPacket {
    /**
     * Constructs new instance with given parameters and 0 (CREATE) action
     * 
-     * @param    team
-     *             Team name, up to 16 characters long
-     * @param    prefix
-     *             Prefix of players in team
-     * @param    suffix
-     *             Suffix of players in team
-     * @param    visibility
-     *             NameTag visibility rule
-     * @param    collision
-     *             Collision rule
-     * @param    players
-     *             Affected entities
-     * @param    options
-     *             bitmask of team options
-     * @throws    IllegalArgumentException
-     *             if {@code name} is null, empty or longer than 16 characters
+     * @param   team
+     *          Team name, up to 16 characters long
+     * @param   prefix
+     *          Prefix of players in team
+     * @param   suffix
+     *          Suffix of players in team
+     * @param   visibility
+     *          NameTag visibility rule
+     * @param   collision
+     *          Collision rule
+     * @param   players
+     *          Affected entities
+     * @param   options
+     *          bitmask of team options
+     * @throws  IllegalArgumentException
+     *          if {@code name} is null, empty or longer than 16 characters
     */
-    public PacketPlayOutScoreboardTeam(String team, String prefix, String suffix, String visibility, String collision, Collection<String> players, int options) {
+    public PacketPlayOutScoreboardTeam(String team, @NonNull String prefix, @NonNull String suffix, String visibility,
+                                       String collision, @NonNull Collection<String> players, int options) {
        this(0, team);
-        Preconditions.checkNotNull(prefix, "prefix");
-        Preconditions.checkNotNull(suffix, "suffix");
-        Preconditions.checkNotNull(visibility, "visibility");
-        Preconditions.checkNotNull(collision, "collision");
-        Preconditions.checkNotNull(players, "players");
        this.playerPrefix = prefix;
        this.playerSuffix = suffix;
        this.nameTagVisibility = visibility;
@@ -125,10 +123,10 @@ public class PacketPlayOutScoreboardTeam implements TabPacket {
    /**
     * Constructs new instance with given parameters and 1 (REMOVE) action
     * 
-     * @param    team
-     *             Team name, up to 16 characters long
-     * @throws    IllegalArgumentException
-     *             if {@code name} is null, empty or longer than 16 characters
+     * @param   team
+     *          Team name, up to 16 characters long
+     * @throws  IllegalArgumentException
+     *          if {@code name} is null, empty or longer than 16 characters
     */
    public PacketPlayOutScoreboardTeam(String team) {
        this(1, team);
@@ -137,28 +135,24 @@ public class PacketPlayOutScoreboardTeam implements TabPacket {
    /**
     * Constructs new instance with given parameters and 2 (UPDATE_TEAM_INFO) action
     * 
-     * @param    team
-     *             Team name, up to 16 characters long
-     * @param    prefix
-     *             Prefix of players in team
-     * @param    suffix
-     *             Suffix of players in team
-     * @param    visibility
-     *             NameTag visibility rule
-     * @param    collision
-     *             Collision rule
-     * @param    options
-     *             bitmask of team options
-     * @throws    IllegalArgumentException
-     *             if {@code name} is null, empty or longer than 16 characters
+     * @param   team
+     *          Team name, up to 16 characters long
+     * @param   prefix
+     *          Prefix of players in team
+     * @param   suffix
+     *          Suffix of players in team
+     * @param   visibility
+     *          NameTag visibility rule
+     * @param   collision
+     *          Collision rule
+     * @param   options
+     *          bitmask of team options
+     * @throws  IllegalArgumentException
+     *          if {@code name} is null, empty or longer than 16 characters
     */
-    public PacketPlayOutScoreboardTeam(String team, String prefix, String suffix, String visibility, String collision, int options) {
+    public PacketPlayOutScoreboardTeam(String team, @NonNull String prefix, @NonNull String suffix,
+                                       String visibility, String collision, int options) {
        this(2, team);
-        Preconditions.checkNotNull(prefix, "prefix");
-        Preconditions.checkNotNull(suffix, "suffix");
-        Preconditions.checkNotNull(visibility, "visibility");
-        Preconditions.checkNotNull(collision, "collision");
-        Preconditions.checkNotNull(players, "players");
        this.playerPrefix = prefix;
        this.playerSuffix = suffix;
        this.nameTagVisibility = visibility;
@@ -170,107 +164,17 @@ public class PacketPlayOutScoreboardTeam implements TabPacket {
     * Constructs new instance with given parameters and 3 (ADD_PLAYERS) if {@code add} is {@code true}, 
     * 4 (REMOVE_PLAYERS) if {@code add} is {@code false} action.
     * 
-     * @param    team
-     *             Team name, up to 16 characters long
-     * @param    players
-     *             Affected entities
-     * @param    add
-     *             {@code true} if players should be added, {@code false} if removed from team
-     * @throws    IllegalArgumentException
-     *             if {@code name} is null, empty or longer than 16 characters
+     * @param   team
+     *          Team name, up to 16 characters long
+     * @param   players
+     *          Affected entities
+     * @param   add
+     *          {@code true} if players should be added, {@code false} if removed from team
+     * @throws  IllegalArgumentException
+     *          if {@code name} is null, empty or longer than 16 characters
     */
-    public PacketPlayOutScoreboardTeam(String team, Collection<String> players, boolean add) {
+    public PacketPlayOutScoreboardTeam(String team, @NonNull Collection<String> players, boolean add) {
        this(add ? 3 : 4, team);
-        Preconditions.checkNotNull(players, "players");
        this.players = players;
    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutScoreboardTeam{name=%s,playerPrefix=%s,playerSuffix=%s,nameTagVisibility=%s,"
-                + "collisionRule=%s,color=%s,players=%s,method=%s,options=%s}",
-                name, playerPrefix, playerSuffix, nameTagVisibility, collisionRule, color, players, action, options);
-    }
-
-    /**
-     * Returns {@link #name}
-     * @return    team name
-     */
-    public String getName() {
-        return name;
-    }
-
-    /**
-     * Returns {@link #playerPrefix}
-     * @return    playerPrefix
-     */
-    public String getPlayerPrefix() {
-        return playerPrefix;
-    }
-
-    /**
-     * Returns {@link #playerSuffix}
-     * @return    playerSuffix
-     */
-    public String getPlayerSuffix() {
-        return playerSuffix;
-    }
-
-    /**
-     * Returns {@link #nameTagVisibility}
-     * @return    nameTagVisibility
-     */
-    public String getNameTagVisibility() {
-        return nameTagVisibility;
-    }
-    
-    /**
-     * Returns {@link #collisionRule}
-     * @return    collisionRule
-     */
-    public String getCollisionRule() {
-        return collisionRule;
-    }
-
-    /**
-     * Sets {@link #color} to specified color
-     * 
-     * @param    color
-     *             color to use
-     */
-    public void setColor(EnumChatFormat color) {
-        this.color = color;
-    }
-
-    /**
-     * Returns {@link #color}
-     * @return    color
-     */
-    public EnumChatFormat getColor() {
-        return color;
-    }
-
-    /**
-     * Returns {@link #players}
-     * @return    players
-     */
-    public Collection<String> getPlayers() {
-        return players;
-    }
-
-    /**
-     * Returns {@link #options}
-     * @return    team options
-     */
-    public int getOptions() {
-        return options;
-    }
-    
-    /**
-     * Returns {@link #action}
-     * @return    packet action
-     */
-    public int getAction() {
-        return action;
-    }
 }
@@ -1,54 +1,18 @@
 package me.neznamy.tab.api.protocol;

-import me.neznamy.tab.api.util.Preconditions;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NonNull;

 /**
 * Class representing a minecraft skin as a value - signature pair.
 */
+@Data @AllArgsConstructor
 public class Skin {

    /** Skin value */
-    private final String value;
+    @NonNull private final String value;

-    /** Skin signature */
+    /** Skin signature, can be null */
    private final String signature;
-
-    /**
-     * Constructs new instance with given parameters
-     * @param   value
-     *          skin value
-     * @param   signature
-     *          skin signature
-     */
-    public Skin(String value, String signature) {
-        Preconditions.checkNotNull(value, "value");
-        Preconditions.checkNotNull(signature, "signature");
-        this.value = value;
-        this.signature = signature;
-    }
-
-    /**
-     * Returns skin value
-     * @return  skin value
-     */
-    public String getValue() {
-        return value;
-    }
-
-    /**
-     * Returns skin signature
-     * @return  skin signature
-     */
-    public String getSignature() {
-        return signature;
-    }
-
-    /**
-     * Returns user-friendly representation of this object
-     * @return  user-friendly representation of this object
-     */
-    @Override
-    public String toString() {
-        return String.format("Skin{value=%s,signature=%s}", value, signature);
-    }
 }
@@ -10,7 +10,8 @@ public interface TabPacket {

    /**
     * Returns user-friendly string representation of the packet
-     * @return user-friendly string representation of the packet
+     *
+     * @return  user-friendly string representation of the packet
     */
    String toString();
 }
@@ -11,7 +11,7 @@ public interface Line {
     * Returns configured raw text of this line. Placeholders
     * remain in raw format.
     * 
-     * @return    raw text of this line
+     * @return  raw text of this line
     */
    String getText();
    
@@ -22,8 +22,8 @@ public interface Line {
     * keep placeholders up to date. If value is identical to previous 
     * one, nothing happens.
     * 
-     * @param    text
-     *             Raw text to display in the line
+     * @param   text
+     *          Raw text to display in the line
     */
    void setText(String text);
 }
@@ -15,7 +15,7 @@ public interface Scoreboard {
     * scoreboards from config use name they were defined with. This value is
     * used internally and in /tab announce scoreboard command.
     * 
-     * @return    custom name of this scoreboard
+     * @return  custom name of this scoreboard
     */
    String getName();

@@ -23,8 +23,8 @@ public interface Scoreboard {
     * Returns raw title of this scoreboard. Placeholders stay in their
     * raw format.
     * 
-     * @return    scoreboard title
-     * @see        #setTitle(String)
+     * @return  scoreboard title
+     * @see     #setTitle(String)
     */
    String getTitle();

@@ -39,9 +39,9 @@ public interface Scoreboard {
     * <p>
     * Calling this method with same title as before will not do anything.
     * 
-     * @param    title
-     *             New title to use with placeholder support
-     * @see        #getTitle()
+     * @param   title
+     *          New title to use with placeholder support
+     * @see     #getTitle()
     */
    void setTitle(String title);

@@ -50,9 +50,9 @@ public interface Scoreboard {
     * in game (first line is on top). This list should only be used for reading,
     * for adding/removing lines see {@link #addLine(String)} and {@link #removeLine(int)}.
     * 
-     * @return    list of lines in this scoreboard
-     * @see        #addLine(String)
-     * @see        #removeLine(int)
+     * @return  list of lines in this scoreboard
+     * @see     #addLine(String)
+     * @see     #removeLine(int)
     */
    List<Line> getLines();

@@ -60,10 +60,10 @@ public interface Scoreboard {
     * Adds line with specified text on the bottom of scoreboard. Supports
     * placeholders, which will automatically be refreshed.
     * 
-     * @param    text
-     *             Text to display
-     * @see        #getLines()
-     * @see        #removeLine(int)
+     * @param   text
+     *          Text to display
+     * @see     #getLines()
+     * @see     #removeLine(int)
     */
    void addLine(String text);

@@ -71,12 +71,12 @@ public interface Scoreboard {
     * Removes line with specified index. Index starts at {@code 0} and ends at 
     * {@link #getLines()}.size()-1.
     * 
-     * @param    index
-     *             Index of line to remove, starting at 0
-     * @throws    IndexOutOfBoundsException
-     *             if the index is out of range (index &lt; 0 || index >= {@link #getLines()}.size())
-     * @see        #getLines()
-     * @see        #addLine(String)
+     * @param   index
+     *          Index of line to remove, starting at 0
+     * @throws  IndexOutOfBoundsException
+     *          if the index is out of range (index &lt; 0 || index &gt;= {@link #getLines()}.size())
+     * @see     #getLines()
+     * @see     #addLine(String)
     */
    void removeLine(int index);

@@ -29,15 +29,15 @@ public interface ScoreboardManager {
     * Client can only see up to 15 lines at a time, however you can define
     * more, if some of them only consist of placeholder that might be empty.
     * 
-     * @param    name
-     *             Internal name of the scoreboard
-     * @param    title
-     *             The scoreboard title
-     * @param    lines
-     *             Lines of text in scoreboard (supports placeholders)
-     * @return    The new scoreboard with given parameters
-     * @throws    NullPointerException
-     *             if {@code name} or {@code lines} is {@code null}
+     * @param   name
+     *          Internal name of the scoreboard
+     * @param   title
+     *          The scoreboard title
+     * @param   lines
+     *          Lines of text in scoreboard (supports placeholders)
+     * @return  The new scoreboard with given parameters
+     * @throws  NullPointerException
+     *          if {@code name} or {@code lines} is {@code null}
     */
    Scoreboard createScoreboard(String name, String title, List<String> lines);
    
@@ -47,7 +47,7 @@ public interface ScoreboardManager {
     * or using {@link #createScoreboard(String, String, List)}.
     * Map value is reference to the actual scoreboard.
     * 
-     * @return    map of registered scoreboards
+     * @return  map of registered scoreboards
     */
    Map<String, Scoreboard> getRegisteredScoreboards();
    
@@ -57,14 +57,14 @@ public interface ScoreboardManager {
     * {@link #resetScoreboard(TabPlayer)}. If the player already sees
     * this scoreboard, nothing will happen.
     * 
-     * @param    player
-     *             Player to send scoreboard to
-     * @param    scoreboard
-     *             Scoreboard to display
-     * @throws    NullPointerException
-     *             if {@code player} or {@code scoreboard} is {@code null}
-     * @see        #hasCustomScoreboard(TabPlayer)
-     * @see        #resetScoreboard(TabPlayer)
+     * @param   player
+     *          Player to send scoreboard to
+     * @param   scoreboard
+     *          Scoreboard to display
+     * @throws  NullPointerException
+     *          if {@code player} or {@code scoreboard} is {@code null}
+     * @see     #hasCustomScoreboard(TabPlayer)
+     * @see     #resetScoreboard(TabPlayer)
     */
    void showScoreboard(TabPlayer player, Scoreboard scoreboard);
    
@@ -72,12 +72,12 @@ public interface ScoreboardManager {
     * Returns {@code true} if player has custom scoreboard set using
     * {@link #showScoreboard(TabPlayer, Scoreboard)}, {@code false} if not.
     * 
-     * @param    player
-     *             Player to check
-     * @return    {@code true} if player has custom scoreboard set using API, 
-     *             {@code false} if not
-     * @see        #showScoreboard(TabPlayer, Scoreboard)
-     * @see        #resetScoreboard(TabPlayer)
+     * @param   player
+     *          Player to check
+     * @return  {@code true} if player has custom scoreboard set using API,
+     *          {@code false} if not
+     * @see      #showScoreboard(TabPlayer, Scoreboard)
+     * @see     #resetScoreboard(TabPlayer)
     */
    boolean hasCustomScoreboard(TabPlayer player);
    
@@ -86,10 +86,10 @@ public interface ScoreboardManager {
     * and re-enables internal display logic with conditions. If player does not
     * have any forced scoreboard, nothing happens.
     * 
-     * @param    player
-     *             Player to hide custom scoreboard from
-     * @see        #showScoreboard(TabPlayer, Scoreboard)
-     * @see        #hasCustomScoreboard(TabPlayer)
+     * @param   player
+     *          Player to hide custom scoreboard from
+     * @see     #showScoreboard(TabPlayer, Scoreboard)
+     * @see     #hasCustomScoreboard(TabPlayer)
     */
    void resetScoreboard(TabPlayer player);
    
@@ -99,11 +99,11 @@ public interface ScoreboardManager {
     * {@link #toggleScoreboard(TabPlayer, boolean)} or
     * {@link #setScoreboardVisible(TabPlayer, boolean, boolean)}.
     * 
-     * @param    player
-     *             Player to get visibility status of
-     * @return    {@code true} if visible, {@code false} if disabled
-     * @see        #setScoreboardVisible(TabPlayer, boolean, boolean)
-     * @see        #toggleScoreboard(TabPlayer, boolean)
+     * @param   player
+     *          Player to get visibility status of
+     * @return  {@code true} if visible, {@code false} if disabled
+     * @see     #setScoreboardVisible(TabPlayer, boolean, boolean)
+     * @see     #toggleScoreboard(TabPlayer, boolean)
     */
    boolean hasScoreboardVisible(TabPlayer player);
    
@@ -113,14 +113,14 @@ public interface ScoreboardManager {
     * visibility, scoreboard is toggled. If {@code sendToggleMessage} is {@code true},
     * toggle message defined in configuration is sent.
     * 
-     * @param    player
-     *             Player to set visibility for
-     * @param    visible
-     *             New visibility status
-     * @param    sendToggleMessage
-     *             whether to send toggle message if status changed or not
-     * @see        #toggleScoreboard(TabPlayer, boolean)
-     * @see        #hasScoreboardVisible(TabPlayer)
+     * @param   player
+     *          Player to set visibility for
+     * @param   visible
+     *          New visibility status
+     * @param   sendToggleMessage
+     *          whether to send toggle message if status changed or not
+     * @see     #toggleScoreboard(TabPlayer, boolean)
+     * @see     #hasScoreboardVisible(TabPlayer)
     */
    void setScoreboardVisible(TabPlayer player, boolean visible, boolean sendToggleMessage);
    
@@ -129,12 +129,12 @@ public interface ScoreboardManager {
     * hides it. If hidden, shows it. If {@code sendToggleMessage} is {@code true},
     * toggle message defined in configuration is sent.
     * 
-     * @param    player
-     *             Player to toggle scoreboard for
-     * @param    sendToggleMessage
-     *             Whether to send toggle message or not
-     * @see        #hasScoreboardVisible(TabPlayer)
-     * @see        #setScoreboardVisible(TabPlayer, boolean, boolean)
+     * @param   player
+     *          Player to toggle scoreboard for
+     * @param   sendToggleMessage
+     *          Whether to send toggle message or not
+     * @see     #hasScoreboardVisible(TabPlayer)
+     * @see     #setScoreboardVisible(TabPlayer, boolean, boolean)
     */
    void toggleScoreboard(TabPlayer player, boolean sendToggleMessage);
    
@@ -143,13 +143,13 @@ public interface ScoreboardManager {
     * time (in milliseconds). Scoreboard name is either defined in config, or 
     * through API in {@link #createScoreboard(String, String, List)}.
     * 
-     * @param    scoreboard
-     *             Scoreboard from config or registered via API
-     * @param    duration
-     *             Duration in milliseconds
-     * @throws    IllegalArgumentException
-     *             if no scoreboard was found with such name or {@code duration}
-     *             is &lt; 0.
+     * @param   scoreboard
+     *          Scoreboard from config or registered via API
+     * @param   duration
+     *          Duration in milliseconds
+     * @throws  IllegalArgumentException
+     *          if no scoreboard was found with such name or {@code duration}
+     *          is &lt; 0.
     */
    void announceScoreboard(String scoreboard, int duration);

@@ -157,9 +157,10 @@ public interface ScoreboardManager {
     * Returns player's currently displayed scoreboard. This can be either with
     * configuration, overridden with commands or the API. Will return {@code null}
     * if player does not see any scoreboard due to not meeting any display condition.
-     * @param    player
-     *             player to get active scoreboard of
-     * @return    player's active scoreboard or {@code null} if player has no scoreboard
+     *
+     * @param   player
+     *          player to get active scoreboard of
+     * @return  player's active scoreboard or {@code null} if player has no scoreboard
     */
    Scoreboard getActiveScoreboard(TabPlayer player);
 }
@@ -1,10 +0,0 @@
-package me.neznamy.tab.api.task;
-
-public interface RepeatingTask {
-    
-    int getInterval();
-
-    void setInterval(int paramInt);
-
-    void cancel();
-}
@@ -4,50 +4,93 @@ import java.util.concurrent.Future;

 import me.neznamy.tab.api.TabFeature;

+/**
+ * Manager for scheduling and executing tasks in TAB's
+ * main thread to avoid concurrency issues.
+ */
 public interface ThreadManager {

    /**
     * Starts a task in new thread and measures how long it took to process
-     * @param feature - feature to add cpu usage to
-     * @param type - usage type to add cpu usage to
-     * @param task - the task
+     *
+     * @param   feature
+     *          feature to add cpu usage to
+     * @param   type
+     *          usage type to add cpu usage to
+     * @param   task
+     *          the task
     */
    Future<Void> runMeasuredTask(TabFeature feature, String type, Runnable task);

    /**
     * Starts a task in new thread and measures how long it took to process
-     * @param feature - feature to add cpu usage to
-     * @param type - usage type to add cpu usage to
-     * @param task - the task
+     *
+     * @param   feature
+     *          feature to add cpu usage to
+     * @param   type
+     *          usage type to add cpu usage to
+     * @param   task
+     *          the task
     */
    Future<Void> runMeasuredTask(String feature, String type, Runnable task);

    /**
     * Runs task in a new thread
-     * @param task - the task
+     *
+     * @param   task
+     *          the task
     */
    Future<Void> runTask(Runnable task);

    /**
     * Starts a new task with defined repeat interval that measures cpu usage
-     * @param intervalMilliseconds - task interval
-     * @param feature - feature to add cpu usage to
-     * @param type - usage type to add cpu usage to
-     * @param task - the task
+     *
+     * @param   intervalMilliseconds
+     *          task interval
+     * @param   feature
+     *          feature to add cpu usage to
+     * @param   type
+     *          usage type to add cpu usage to
+     * @param   task
+     *          the task
+     * @return  Future representing the submitted task
     */
-    RepeatingTask startRepeatingMeasuredTask(int intervalMilliseconds, TabFeature feature, String type, Runnable task);
+    Future<?> startRepeatingMeasuredTask(int intervalMilliseconds, TabFeature feature, String type, Runnable task);

-    RepeatingTask startRepeatingTask(int intervalMilliseconds, Runnable task);
+    /**
+     * Starts a new task with defined repeat interval
+     *
+     * @param   intervalMilliseconds
+     *          task interval
+     * @param   task
+     *          the task
+     * @return  Future representing the submitted task
+     */
+    Future<?> startRepeatingTask(int intervalMilliseconds, Runnable task);

    /**
     * Runs task with a delay and measures how long it took to process
-     * @param delayMilliseconds - how long to run the task after
-     * @param feature - feature to add cpu usage to
-     * @param type - usage type to add cpu usage to
-     * @param task - the task
-     * @return future allowing to cancel the task
+     *
+     * @param   delayMilliseconds
+     *          how long to run the task after
+     * @param   feature
+     *          feature to add cpu usage to
+     * @param   type
+     *          usage type to add cpu usage to
+     * @param   task
+     *          the task
+     * @return  Future representing the submitted task
     */
    Future<?> runTaskLater(int delayMilliseconds, TabFeature feature, String type, Runnable task);

+    /**
+     * Runs task with a delay
+     *
+     * @param   delayMilliseconds
+     *          how long to run the task after
+     * @param   task
+     *          the task
+     * @return  Future representing the submitted task
+     */
    Future<?> runTaskLater(int delayMilliseconds, Runnable task);
 }
@@ -6,92 +6,138 @@ public interface TeamManager {

    /**
     * Makes player's NameTag globally invisible
-     * @see #showNametag(TabPlayer)
-     * @see #hasHiddenNametag(TabPlayer)
+     *
+     * @param   player
+     *          player to hide nametag of
+     * @see     #showNametag(TabPlayer)
+     * @see     #hasHiddenNametag(TabPlayer)
     */
    void hideNametag(TabPlayer player);

    /**
     * Hides player's NameTag for specified player until it's shown again
-     * @param viewer - player to hide NameTag for
+     *
+     * @param   player
+     *          player to hide nametag of
+     * @param   viewer
+     *          player to hide NameTag for
     */
    void hideNametag(TabPlayer player, TabPlayer viewer);

    /**
     * Makes player's NameTag visible again
-     * @see #hideNametag(TabPlayer)
-     * @see #hasHiddenNametag(TabPlayer)
+     *
+     * @param   player
+     *          player to show nametag of
+     * @see     #hideNametag(TabPlayer)
+     * @see     #hasHiddenNametag(TabPlayer)
     */
    void showNametag(TabPlayer player);

    /**
     * Shows player's NameTag for specified viewer if it was hidden before
-     * @param viewer - player to show NameTag back for
+     *
+     * @param   player
+     *          player to show nametag of
+     * @param   viewer
+     *          player to show NameTag back for
     */
    void showNametag(TabPlayer player, TabPlayer viewer);

    /**
     * Return whether player has hidden NameTag or not
-     * @return Whether player has hidden NameTag or not
-     * @see #hideNametag(TabPlayer)
-     * @see #showNametag(TabPlayer)
+     *
+     * @param   player
+     *          player to check nametag visibility status of
+     * @return  Whether player has hidden NameTag or not
+     * @see     #hideNametag(TabPlayer)
+     * @see     #showNametag(TabPlayer)
     */
    boolean hasHiddenNametag(TabPlayer player);

    /**
     * Returns true if NameTag is hidden for specified viewer, false if not
-     * @param viewer - player to check visibility status for
-     * @return true if hidden, false if not
+     *
+     * @param   player
+     *          player to check visibility status of
+     * @param   viewer
+     *          player to check visibility status for
+     * @return  true if hidden, false if not
     */
    boolean hasHiddenNametag(TabPlayer player, TabPlayer viewer);

    /**
     * Unregisters player's team and no longer handles it, as well as disables anti-override for teams.
     * This can be resumed using resumeTeamHandling(). If team handling was paused already, nothing happens.
+     *
+     * @param   player
+     *          player to pause team handling of
     */
    void pauseTeamHandling(TabPlayer player);

    /**
     * Resumes team handling if it was before paused using pauseTeamHandling(), if not, nothing happens
+     *
+     * @param   player
+     *          player to resume team handling of
     */
    void resumeTeamHandling(TabPlayer player);

    /**
     * Returns true if team handling is paused for this player using pauseTeamHandling(), false if not, or
     * it was resumed already using resumeTeamHandling
-     * @return true if paused, false if not
+     *
+     * @param   player
+     *          player to check handling status of
+     * @return  true if paused, false if not
     */
    boolean hasTeamHandlingPaused(TabPlayer player);

    /**
     * Forces new team name for the player until this method is called again with null argument and
     * performs all actions to change player's team name
-     * @param teamName - forced team name
+     *
+     * @param   player
+     *          player to set team name of
+     * @param   teamName
+     *          forced team name
     */
    void forceTeamName(TabPlayer player, String teamName);

    /**
     * Returns forced team name of player or null if not forced
-     * @return forced team name of player or null if not forced
+     *
+     * @param   player
+     *          player to check forced team name of
+     * @return  forced team name of player or null if not forced
     */
    String getForcedTeamName(TabPlayer player);


    /**
     * Forces collision rule for the player. Setting it to null will remove forced value
-     * @param collision - forced collision rule
+     *
+     * @param   player
+     *          player to set collision rule of
+     * @param   collision
+     *          forced collision rule
     */
    void setCollisionRule(TabPlayer player, Boolean collision);

    /**
     * Returns forced collision rule or null if collision is not forced using setCollisionRule
-     * @return forced value or null if not forced
+     *
+     * @param   player
+     *          player to get forced collision of
+     * @return  forced value or null if not forced
     */
    Boolean getCollisionRule(TabPlayer player);

    /**
     * Sends update team's properties packet of player's team to everyone
-     * @param player - player to update team data of
+     *
+     * @param   player
+     *          player to update team data of
     */
    void updateTeamData(TabPlayer player);

@@ -116,10 +162,10 @@ public interface TeamManager {
     * On first call, nametags of all players will become invisible for specified
     * player. On second call, they will become visible again.
     *
-     * @param    player
-     *             player to toggle nametag visibility view for
-     * @param    sendToggleMessage
-     *             {@code true} if configured toggle message should be sent, {@code false} if not
+     * @param   player
+     *          player to toggle nametag visibility view for
+     * @param   sendToggleMessage
+     *          {@code true} if configured toggle message should be sent, {@code false} if not
     */
    void toggleNameTagVisibilityView(TabPlayer player, boolean sendToggleMessage);

@@ -128,9 +174,9 @@ public interface TeamManager {
     * {@link #toggleNameTagVisibilityView(TabPlayer, boolean)} or using a command,
     * {@code false} if not.
     *
-     * @param    player
-     *             player to check
-     * @return    {@code true} if hidden, {@code false} if not
+     * @param   player
+     *          player to check
+     * @return  {@code true} if hidden, {@code false} if not
     */
    boolean hasHiddenNameTagVisibilityView(TabPlayer player);
 }
@@ -2,17 +2,28 @@ package me.neznamy.tab.api.util;

 /**
 * An interface for BiFunction which can throw an exception.
- * Used in {@link me.neznamy.tab.api.protocol.PacketBuilder} to 
+ * Used in {@link me.neznamy.tab.api.protocol.PacketBuilder} to
 * call build method for packet classes, which may throw an
 * exception due to reflection.
- * @param    <A>
- *             First function argument
- * @param    <B>
- *             Second function argument
- * @param    <C>
- *             Function return type
+ * @param   <A>
+ *          First function argument
+ * @param   <B>
+ *          Second function argument
+ * @param   <C>
+ *          Function return type
 */
 public interface BiFunctionWithException<A, B, C> {

+    /**
+     * Runs the function and returns the result
+     *
+     * @param   a
+     *          First argument
+     * @param   b
+     *          Second argument
+     * @return  Output from function
+     * @throws  ReflectiveOperationException
+     *          If reflective operation fails
+     */
    C apply(A a, B b) throws ReflectiveOperationException;
 }
@@ -0,0 +1,30 @@
+package me.neznamy.tab.api.util;
+
+import lombok.AllArgsConstructor;
+import me.neznamy.tab.api.ProtocolVersion;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@AllArgsConstructor
+public class ComponentCache<K, V> {
+
+    private final int cacheSize;
+    private final BiFunctionWithException<K, ProtocolVersion, V> function;
+    private final Map<K, V> cacheModern = new HashMap<>();
+    private final Map<K, V> cacheLegacy = new HashMap<>();
+
+    public V get(K key, ProtocolVersion clientVersion) {
+        try {
+            if (key == null) return null;
+            Map<K, V> cache = clientVersion == null || clientVersion.getMinorVersion() >= 16 ? cacheModern : cacheLegacy;
+            if (cache.containsKey(key)) return cache.get(key);
+            V value = function.apply(key, clientVersion);
+            if (cache.size() > cacheSize) cache.clear();
+            cache.put(key, value);
+            return value;
+        } catch (ReflectiveOperationException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}
@@ -1,20 +1,64 @@
 package me.neznamy.tab.api.util;

+import lombok.NonNull;
+import me.neznamy.tab.api.TabPlayer;
+
+/**
+ * Class with utility methods used in the plugin
+ */
 public class Preconditions {

-    private Preconditions(){}
+    /**
+     * Private constructor preventing the class from being instantiated
+     */
+    private Preconditions() {}

-    public static void checkNotNull(Object obj, String name){
-        if (obj == null) throw new IllegalArgumentException(name + " cannot be null");
-    }
-
-    public static void checkMaxLength(String string, int maxLength, String name) {
-        checkNotNull(string, name);
+    /**
+     * Checks length of String and throws {@code IllegalArgumentException} if it is
+     * longer than limit.
+     *
+     * @param   string
+     *          String to check
+     * @param   maxLength
+     *          Maximum length of the string
+     * @param   name
+     *          Name of the variable to use in exception message
+     * @throws  IllegalArgumentException
+     *          if {@code string} is {@code null} or longer than {@code maxLength} characters
+     */
+    public static void checkMaxLength(@NonNull String string, int maxLength, String name) {
        if (string.length() > maxLength) throw new IllegalArgumentException(name + " is longer than " + maxLength + " characters (" + string.length() + ")");
    }

-    public static void checkRange(Number number, Number min, Number max, String variable){
+    /**
+     * Checks number range and throws {@code IllegalArgumentException} if number
+     * is out of range.
+     *
+     * @param   number
+     *          Number to check
+     * @param   min
+     *          Minimum allowed value
+     * @param   max
+     *          Maximum allowed value
+     * @param   variable
+     *          Variable name to use in exception message
+     * @throws  IllegalArgumentException
+     *          if {@code number} is out of range ({@code number < min || number > max})
+     */
+    public static void checkRange(Number number, Number min, Number max, String variable) {
        if (number.doubleValue() < min.doubleValue() || number.doubleValue() > max.doubleValue())
-            throw new IllegalArgumentException(variable + " index out of range (" + min + " - " + max + ")");
+            throw new IllegalArgumentException(variable + " index out of range (" + min + " - " + max + "), was " + number);
+    }
+
+    /**
+     * Checks if player is loaded and throws {@code IllegalStateException} if not.
+     *
+     * @param   player
+     *          Player to check
+     * @throws  IllegalStateException
+     *          If player is not loaded
+     */
+    public static void checkLoaded(TabPlayer player) {
+        if (!player.isLoaded()) throw new IllegalStateException("Player is not loaded yet. Try again later.");
    }
 }
@@ -0,0 +1,24 @@
+package me.neznamy.tab.api.util;
+
+/**
+ * Utility class storing methods working with reflection
+ */
+public class ReflectionUtils {
+
+    /**
+     * Returns {@code true} if class with given full name exists,
+     * {@code false} if not.
+     *
+     * @param   path
+     *          Full class path and name
+     * @return  {@code true} if exists, {@code false} if not
+     */
+    public static boolean classExists(String path) {
+        try {
+            Class.forName(path);
+            return true;
+        } catch (ClassNotFoundException | NullPointerException e) {
+            return false;
+        }
+    }
+}
@@ -0,0 +1,12 @@
+package me.neznamy.tab.api.util;
+
+/**
+ * Supplier that can throw an exception
+ *
+ * @param   <T>
+ *          Return class type
+ */
+public interface SupplierWithException<T> {
+
+    T get() throws Exception;
+}
@@ -2,11 +2,16 @@ plugins {
    `kotlin-dsl`
 }

-repositories {
-    gradlePluginPortal()
-    mavenCentral()
+dependencies {
+    implementation(libs.plugin.shadow)
+    implementation(libs.plugin.lombok)
 }

 dependencies {
-    implementation("gradle.plugin.com.github.johnrengelman", "shadow", "7.1.0")
+    compileOnly(files(libs::class.java.protectionDomain.codeSource.location))
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
 }
@@ -0,0 +1,16 @@
+rootProject.name = "build-logic"
+
+dependencyResolutionManagement {
+    repositories {
+        gradlePluginPortal()
+        mavenCentral()
+    }
+    // You're a great IDE IntelliJ, but sometimes you really annoy me. >:(
+//    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+
+    versionCatalogs {
+        register("libs") {
+            from(files("../gradle/libs.versions.toml"))
+        }
+    }
+}
@@ -2,6 +2,7 @@ import org.apache.tools.ant.filters.ReplaceTokens

 plugins {
    `java-library`
+    id("io.freefair.lombok")
 }

 tasks {
@@ -13,6 +14,8 @@ tasks {
        ))
    }
    javadoc {
+        // This saves a decent bit of processing power on slow machines
+        enabled = false
        options.encoding = Charsets.UTF_8.name()
        (options as StandardJavadocDocletOptions).addStringOption("Xdoclint:none", "-quiet")
    }
@@ -1,9 +1,3 @@
-import gradle.kotlin.dsl.accessors._4cbb0020bd75d48acc42cabded5fdbb7.publishing
-import org.gradle.api.artifacts.repositories.PasswordCredentials
-import org.gradle.api.publish.maven.MavenPublication
-import org.gradle.kotlin.dsl.get
-import org.gradle.kotlin.dsl.repositories
-
 plugins {
    id("tab.base-conventions")
    `maven-publish`
@@ -11,8 +11,9 @@ allprojects {
 val platforms = setOf(
    projects.bukkit,
    projects.bungeecord,
-//    projects.krypton,
-    projects.velocity
+    projects.krypton,
+    projects.velocity,
+    //projects.sponge
 ).map { it.dependencyProject }

 val special = setOf(
@@ -6,6 +6,4 @@ dependencies {
    compileOnly(libs.vault)
    compileOnly(libs.via)
    compileOnly(libs.authlib)
-    compileOnly(libs.libsDisguises)
-    compileOnly(libs.essentials)
 }
@@ -1,5 +1,7 @@
 package me.neznamy.tab.platforms.bukkit;

+import lombok.RequiredArgsConstructor;
+import me.neznamy.tab.api.TabAPI;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
@@ -8,56 +10,63 @@ import org.bukkit.event.player.PlayerCommandPreprocessEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerQuitEvent;

-import me.neznamy.tab.shared.TAB;
-
 /**
 * The core for bukkit forwarding events into all enabled features
 */
+@RequiredArgsConstructor
 public class BukkitEventListener implements Listener {

+    /** Platform instance */
    private final BukkitPlatform platform;
    
-    public BukkitEventListener(BukkitPlatform platform) {
-        this.platform = platform;
-    }
-    
    /**
     * Listener to PlayerQuitEvent to remove player data and forward the event to features
-     * @param e quit event
+     *
+     * @param   e
+     *          quit event
     */
    @EventHandler(priority = EventPriority.HIGHEST)
    public void onQuit(PlayerQuitEvent e){
-        if (TAB.getInstance().isDisabled()) return;
-        TAB.getInstance().getCPUManager().runTask(() -> TAB.getInstance().getFeatureManager().onQuit(TAB.getInstance().getPlayer(e.getPlayer().getUniqueId())));
+        if (TabAPI.getInstance().isPluginDisabled()) return;
+        TabAPI.getInstance().getThreadManager().runTask(() -> TabAPI.getInstance().getFeatureManager().onQuit(TabAPI.getInstance().getPlayer(e.getPlayer().getUniqueId())));
    }
    
    /**
     * Listener to PlayerJoinEvent to create player data and forward the event to features
-     * @param e join event
+     *
+     * @param   e
+     *          join event
     */
    @EventHandler(priority = EventPriority.LOWEST)
    public void onJoin(PlayerJoinEvent e) {
-        if (TAB.getInstance().isDisabled()) return;
-        TAB.getInstance().getCPUManager().runTask(() -> TAB.getInstance().getFeatureManager().onJoin(new BukkitTabPlayer(e.getPlayer(), platform.getProtocolVersion(e.getPlayer()))));
+        if (TabAPI.getInstance().isPluginDisabled()) return;
+        TabAPI.getInstance().getThreadManager().runTask(() ->
+                TabAPI.getInstance().getFeatureManager().onJoin(new BukkitTabPlayer(e.getPlayer(), platform.getProtocolVersion(e.getPlayer()))));
    }

    /**
     * Listener to PlayerChangedWorldEvent to forward the event to features
-     * @param e world changed event
+     *
+     * @param   e
+     *          world changed event
     */
    @EventHandler(priority = EventPriority.LOWEST)
    public void onWorldChange(PlayerChangedWorldEvent e){
-        if (TAB.getInstance().isDisabled()) return;
-        TAB.getInstance().getCPUManager().runTask(() -> TAB.getInstance().getFeatureManager().onWorldChange(e.getPlayer().getUniqueId(), e.getPlayer().getWorld().getName()));
+        if (TabAPI.getInstance().isPluginDisabled()) return;
+        TabAPI.getInstance().getThreadManager().runTask(() ->
+                TabAPI.getInstance().getFeatureManager().onWorldChange(e.getPlayer().getUniqueId(), e.getPlayer().getWorld().getName()));
    }

    /**
     * Listener to PlayerChangedWorldEvent to forward the event to features
-     * @param e command preprocess event
+     *
+     * @param   e
+     *          command preprocess event
     */
    @EventHandler
    public void onCommand(PlayerCommandPreprocessEvent e) {
-        if (TAB.getInstance().isDisabled()) return;
-        if (TAB.getInstance().getFeatureManager().onCommand(TAB.getInstance().getPlayer(e.getPlayer().getUniqueId()), e.getMessage())) e.setCancelled(true);
+        if (TabAPI.getInstance().isPluginDisabled()) return;
+        if (TabAPI.getInstance().getFeatureManager().onCommand(
+                TabAPI.getInstance().getPlayer(e.getPlayer().getUniqueId()), e.getMessage())) e.setCancelled(true);
    }
 }
@@ -1,82 +1,64 @@
 package me.neznamy.tab.platforms.bukkit;

-import java.lang.reflect.Array;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.EnumMap;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.UUID;
-
-import com.mojang.authlib.properties.Property;
-import me.neznamy.tab.api.protocol.*;
-import org.bukkit.Bukkit;
-import org.bukkit.Location;
-import org.bukkit.entity.EntityType;
-
-import com.google.gson.JsonObject;
 import com.mojang.authlib.GameProfile;
-
+import com.mojang.authlib.properties.Property;
 import me.neznamy.tab.api.ProtocolVersion;
-import me.neznamy.tab.api.chat.ChatClickable.EnumClickAction;
-import me.neznamy.tab.api.chat.ChatComponentEntity;
-import me.neznamy.tab.api.chat.ChatHoverable.EnumHoverAction;
+import me.neznamy.tab.api.TabAPI;
 import me.neznamy.tab.api.chat.EnumChatFormat;
 import me.neznamy.tab.api.chat.IChatBaseComponent;
-import me.neznamy.tab.api.chat.TextColor;
+import me.neznamy.tab.api.chat.WrappedChatComponent;
+import me.neznamy.tab.api.protocol.*;
 import me.neznamy.tab.api.protocol.PacketPlayOutBoss.Action;
 import me.neznamy.tab.api.protocol.PacketPlayOutPlayerInfo.EnumGamemode;
 import me.neznamy.tab.api.protocol.PacketPlayOutPlayerInfo.EnumPlayerInfoAction;
 import me.neznamy.tab.api.protocol.PacketPlayOutPlayerInfo.PlayerInfoData;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
+import me.neznamy.tab.api.util.ComponentCache;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutEntityDestroy;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutEntityMetadata;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutEntityTeleport;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutSpawnEntityLiving;
 import me.neznamy.tab.platforms.bukkit.nms.datawatcher.DataWatcher;
+import me.neznamy.tab.platforms.bukkit.nms.storage.NMSStorage;
+import org.bukkit.Location;
+import org.bukkit.entity.EntityType;
+
+import java.lang.reflect.Array;
+import java.util.*;
+import java.util.stream.Collectors;

@SuppressWarnings({"unchecked", "rawtypes"})
 public class BukkitPacketBuilder extends PacketBuilder {

-    //nms storage
+    /** NMS data storage */
    private final NMSStorage nms = NMSStorage.getInstance();

-    //entity type ids
+    /** Map of entity type ids for entities used by the plugin */
    private final EnumMap<EntityType, Integer> entityIds = new EnumMap<>(EntityType.class);

-    private final Map<IChatBaseComponent, Object> componentCacheModern = new HashMap<>();
-    private final Map<IChatBaseComponent, Object> componentCacheLegacy = new HashMap<>();
+    /** Component cache for better performance (1.16+ players) */
+
+    private final ComponentCache<IChatBaseComponent, Object> componentCacheModern = new ComponentCache<>(10000,
+            (component, clientVersion) -> nms.ChatSerializer_DESERIALIZE.invoke(null, component.toString(clientVersion)));
+
+    /** Component cache for better performance (1.15- players) */
+    private final ComponentCache<IChatBaseComponent, Object> componentCacheLegacy = new ComponentCache<>(10000,
+            (component, clientVersion) -> nms.ChatSerializer_DESERIALIZE.invoke(null, component.toString(clientVersion)));

-    private Object emptyScoreboard;
-    private Object dummyEntity;

    /**
     * Constructs new instance
     */
    public BukkitPacketBuilder() {
-        if (nms.getMinorVersion() >= 13) {
+        if (nms.getMinorVersion() >= 19) {
+            entityIds.put(EntityType.ARMOR_STAND, 2);
+        } else if (nms.getMinorVersion() >= 13) {
            entityIds.put(EntityType.ARMOR_STAND, 1);
-            entityIds.put(EntityType.WITHER, 83);
        } else {
            entityIds.put(EntityType.WITHER, 64);
            if (nms.getMinorVersion() >= 8){
                entityIds.put(EntityType.ARMOR_STAND, 30);
            }
        }
-        try {
-            emptyScoreboard = nms.newScoreboard.newInstance();
-        } catch (ReflectiveOperationException e) {
-            Bukkit.getConsoleSender().sendMessage(EnumChatFormat.color("&c[TAB] Failed to create instance of \"Scoreboard\""));
-        }
-        if (nms.getMinorVersion() >= 8) {
-            try {
-                dummyEntity = nms.newEntityArmorStand.newInstance(nms.World_getHandle.invoke(Bukkit.getWorlds().get(0)), 0, 0, 0);
-            } catch (ReflectiveOperationException e) {
-                Bukkit.getConsoleSender().sendMessage(EnumChatFormat.color("&c[TAB] Failed to create instance of \"EntityArmorStand\""));
-            }
-        }
        buildMap.put(PacketPlayOutEntityMetadata.class, (packet, version) -> build((PacketPlayOutEntityMetadata)packet));
        buildMap.put(PacketPlayOutEntityTeleport.class, (packet, version) -> build((PacketPlayOutEntityTeleport)packet));
        buildMap.put(PacketPlayOutEntityDestroy.class, (packet, version) -> build((PacketPlayOutEntityDestroy)packet));
@@ -96,41 +78,76 @@ public class BukkitPacketBuilder extends PacketBuilder {
    @Override
    public Object build(PacketPlayOutChat packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        Object component = toNMSComponent(packet.getMessage(), clientVersion);
-        if (nms.getMinorVersion() >= 16) {
-            return nms.newPacketPlayOutChat.newInstance(component, nms.ChatMessageType_values[packet.getType().ordinal()], UUID.randomUUID());
-        }
-        if (nms.getMinorVersion() >= 12) {
-            return nms.newPacketPlayOutChat.newInstance(component, Enum.valueOf((Class<Enum>) nms.ChatMessageType, packet.getType().toString()));
-        }
-        if (nms.getMinorVersion() >= 8) {
+        if (nms.getMinorVersion() >= 19)
+            try {
+                return nms.newPacketPlayOutChat.newInstance(component, packet.getType() == PacketPlayOutChat.ChatMessageType.GAME_INFO);
+            } catch (Exception e) {
+                //1.19.0
+                return nms.newPacketPlayOutChat.newInstance(component, packet.getType().ordinal());
+            }
+        if (nms.getMinorVersion() >= 16)
+            return nms.newPacketPlayOutChat.newInstance(component, Enum.valueOf(nms.ChatMessageType, packet.getType().toString()), UUID.randomUUID());
+        if (nms.getMinorVersion() >= 12)
+            return nms.newPacketPlayOutChat.newInstance(component, Enum.valueOf(nms.ChatMessageType, packet.getType().toString()));
+        if (nms.getMinorVersion() >= 8)
            return nms.newPacketPlayOutChat.newInstance(component, (byte) packet.getType().ordinal());
-        }
-        if (nms.getMinorVersion() == 7) {
+        if (nms.getMinorVersion() == 7)
            return nms.newPacketPlayOutChat.newInstance(component);
-        }
-        throw new IllegalStateException("Not supported on <1.7");
+        return packet;
    }

    @Override
    public Object build(PacketPlayOutPlayerInfo packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        if (nms.getMinorVersion() < 8) return null;
-        Object nmsPacket = nms.newPacketPlayOutPlayerInfo.newInstance(nms.EnumPlayerInfoAction_values[packet.getAction().ordinal()], Array.newInstance(nms.EntityPlayer, 0));
-        List<Object> items = new ArrayList<>();
-        for (PlayerInfoData data : packet.getEntries()) {
-            GameProfile profile = new GameProfile(data.getUniqueId(), data.getName());
-            if (data.getSkin() != null) profile.getProperties().put("textures", new Property("textures", data.getSkin().getValue(), data.getSkin().getSignature()));
-            List<Object> parameters = new ArrayList<>();
-            if (nms.newPlayerInfoData.getParameterCount() == 5) {
-                parameters.add(nmsPacket);
+        if (nms.ClientboundPlayerInfoRemovePacket != null) {
+            //1.19.3+
+            if (packet.getActions().contains(EnumPlayerInfoAction.REMOVE_PLAYER)) {
+                return nms.newClientboundPlayerInfoRemovePacket.newInstance(
+                        packet.getEntries().stream().map(PlayerInfoData::getUniqueId).collect(Collectors.toList())
+                );
            }
-            parameters.add(profile);
-            parameters.add(data.getLatency());
-            parameters.add(data.getGameMode() == null ? null : nms.EnumGamemode_values[nms.EnumGamemode_values.length-EnumGamemode.VALUES.length+data.getGameMode().ordinal()]); //not_set was removed in 1.17
-            parameters.add(data.getDisplayName() == null ? null : toNMSComponent(data.getDisplayName(), clientVersion));
-            items.add(nms.newPlayerInfoData.newInstance(parameters.toArray()));
+            Enum[] array = packet.getActions().stream().map(action -> Enum.valueOf(nms.EnumPlayerInfoAction, action.toString())).toArray(Enum[]::new);
+            Object nmsPacket = nms.newPacketPlayOutPlayerInfo.newInstance(EnumSet.of(array[0], array), Collections.emptyList());
+            List<Object> items = new ArrayList<>();
+            for (PlayerInfoData data : packet.getEntries()) {
+                GameProfile profile = new GameProfile(data.getUniqueId(), data.getName());
+                if (data.getSkin() != null) profile.getProperties().put("textures",
+                        new Property("textures", data.getSkin().getValue(), data.getSkin().getSignature()));
+                Object obj = nms.newPlayerInfoData.newInstance(
+                        data.getUniqueId(),
+                        profile,
+                        data.isListed(),
+                        data.getLatency(),
+                        data.getGameMode() == null ? null : Enum.valueOf(nms.EnumGamemode, data.getGameMode().toString()),
+                        data.getDisplayName() == null ? null : toNMSComponent(data.getDisplayName(), clientVersion),
+                        data.getProfilePublicKey() == null ? null : nms.newRemoteChatSession$Data.newInstance(data.getChatSessionId(), data.getProfilePublicKey()));
+                items.add(obj);
+            }
+            nms.setField(nmsPacket, nms.PacketPlayOutPlayerInfo_PLAYERS, items);
+            return nmsPacket;
+        } else {
+            //1.19.2-
+            EnumPlayerInfoAction action = packet.getActions().contains(EnumPlayerInfoAction.ADD_PLAYER) ?
+                    EnumPlayerInfoAction.ADD_PLAYER : packet.getActions().iterator().next();
+            Object nmsPacket = nms.newPacketPlayOutPlayerInfo.newInstance(Enum.valueOf(nms.EnumPlayerInfoAction, action.toString()), Array.newInstance(nms.EntityPlayer, 0));
+            List<Object> items = new ArrayList<>();
+            for (PlayerInfoData data : packet.getEntries()) {
+                GameProfile profile = new GameProfile(data.getUniqueId(), data.getName());
+                if (data.getSkin() != null) profile.getProperties().put("textures", new Property("textures", data.getSkin().getValue(), data.getSkin().getSignature()));
+                List<Object> parameters = new ArrayList<>();
+                if (nms.newPlayerInfoData.getParameterTypes()[0] == nms.PacketPlayOutPlayerInfo) {
+                    parameters.add(nmsPacket);
+                }
+                parameters.add(profile);
+                parameters.add(data.getLatency());
+                parameters.add(data.getGameMode() == null ? null : Enum.valueOf(nms.EnumGamemode, data.getGameMode().toString()));
+                parameters.add(data.getDisplayName() == null ? null : toNMSComponent(data.getDisplayName(), clientVersion));
+                if (nms.getMinorVersion() >= 19) parameters.add(data.getProfilePublicKey());
+                items.add(nms.newPlayerInfoData.newInstance(parameters.toArray()));
+            }
+            nms.setField(nmsPacket, nms.PacketPlayOutPlayerInfo_PLAYERS, items);
+            return nmsPacket;
        }
-        nms.setField(nmsPacket, nms.PacketPlayOutPlayerInfo_PLAYERS, items);
-        return nmsPacket;
    }

    @Override
@@ -156,7 +173,7 @@ public class BukkitPacketBuilder extends PacketBuilder {
        if (nms.getMinorVersion() >= 13) {
            return nms.newPacketPlayOutScoreboardObjective.newInstance(nms.newScoreboardObjective.newInstance(null, packet.getObjectiveName(), null, 
                    toNMSComponent(IChatBaseComponent.optimizedComponent(displayName), clientVersion), 
-                    packet.getRenderType() == null ? null : nms.EnumScoreboardHealthDisplay_values[packet.getRenderType().ordinal()]), 
+                    packet.getRenderType() == null ? null : Enum.valueOf(nms.EnumScoreboardHealthDisplay, packet.getRenderType().toString())),
                    packet.getAction());
        }

@@ -164,7 +181,7 @@ public class BukkitPacketBuilder extends PacketBuilder {
        nms.setField(nmsPacket, nms.PacketPlayOutScoreboardObjective_OBJECTIVENAME, packet.getObjectiveName());
        nms.setField(nmsPacket, nms.PacketPlayOutScoreboardObjective_DISPLAYNAME, displayName);
        if (nms.getMinorVersion() >= 8 && packet.getRenderType() != null) {
-            nms.setField(nmsPacket, nms.PacketPlayOutScoreboardObjective_RENDERTYPE, Enum.valueOf((Class<Enum>) nms.EnumScoreboardHealthDisplay, packet.getRenderType().toString()));
+            nms.setField(nmsPacket, nms.PacketPlayOutScoreboardObjective_RENDERTYPE, Enum.valueOf(nms.EnumScoreboardHealthDisplay, packet.getRenderType().toString()));
        }
        nms.setField(nmsPacket, nms.PacketPlayOutScoreboardObjective_METHOD, packet.getAction());
        return nmsPacket;
@@ -173,12 +190,12 @@ public class BukkitPacketBuilder extends PacketBuilder {
    @Override
    public Object build(PacketPlayOutScoreboardScore packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        if (nms.getMinorVersion() >= 13) {
-            return nms.newPacketPlayOutScoreboardScore_1_13.newInstance(nms.EnumScoreboardAction_values[packet.getAction().ordinal()], packet.getObjectiveName(), packet.getPlayer(), packet.getScore());
+            return nms.newPacketPlayOutScoreboardScore_1_13.newInstance(Enum.valueOf(nms.EnumScoreboardAction, packet.getAction().toString()), packet.getObjectiveName(), packet.getPlayer(), packet.getScore());
        }
        if (packet.getAction() == PacketPlayOutScoreboardScore.Action.REMOVE) {
            return nms.newPacketPlayOutScoreboardScore_String.newInstance(packet.getPlayer());
        }
-        Object score = nms.newScoreboardScore.newInstance(emptyScoreboard, newScoreboardObjective(packet.getObjectiveName()), packet.getPlayer());
+        Object score = nms.newScoreboardScore.newInstance(nms.emptyScoreboard, newScoreboardObjective(packet.getObjectiveName()), packet.getPlayer());
        nms.ScoreboardScore_setScore.invoke(score, packet.getScore());
        if (nms.getMinorVersion() >= 8) {
            return nms.newPacketPlayOutScoreboardScore.newInstance(score);
@@ -189,7 +206,7 @@ public class BukkitPacketBuilder extends PacketBuilder {
    @Override
    public Object build(PacketPlayOutScoreboardTeam packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        if (nms.PacketPlayOutScoreboardTeam == null) return null; //fabric
-        Object team = nms.newScoreboardTeam.newInstance(emptyScoreboard, packet.getName());
+        Object team = nms.newScoreboardTeam.newInstance(nms.emptyScoreboard, packet.getName());
        String prefix = packet.getPlayerPrefix();
        String suffix = packet.getPlayerSuffix();
        if (clientVersion.getMinorVersion() < 13) {
@@ -213,9 +230,9 @@ public class BukkitPacketBuilder extends PacketBuilder {
            case 2:
                return nms.PacketPlayOutScoreboardTeam_ofBoolean.invoke(null, team, false);
            case 3:
-                return nms.PacketPlayOutScoreboardTeam_ofString.invoke(null, team, packet.getPlayers().toArray(new String[0])[0], nms.PacketPlayOutScoreboardTeam_PlayerAction_values[0]);
+                return nms.PacketPlayOutScoreboardTeam_ofString.invoke(null, team, packet.getPlayers().iterator().next(), Enum.valueOf(nms.PacketPlayOutScoreboardTeam_PlayerAction, "ADD"));
            case 4:
-                return nms.PacketPlayOutScoreboardTeam_ofString.invoke(null, team, packet.getPlayers().toArray(new String[0])[0], nms.PacketPlayOutScoreboardTeam_PlayerAction_values[1]);
+                return nms.PacketPlayOutScoreboardTeam_ofString.invoke(null, team, packet.getPlayers().iterator().next(), Enum.valueOf(nms.PacketPlayOutScoreboardTeam_PlayerAction, "REMOVE"));
            default:
                throw new IllegalArgumentException("Invalid action: " + packet.getAction());
            }
@@ -224,10 +241,13 @@ public class BukkitPacketBuilder extends PacketBuilder {
    }

    /**
-     * Builds entity destroy packet with given parameter
-     * @return destroy packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * Builds entity destroy packet from custom packet class
+     *
+     * @param   packet
+     *          Destroy packet
+     * @return  NMS destroy packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutEntityDestroy packet) throws ReflectiveOperationException {
        try {
@@ -238,26 +258,41 @@ public class BukkitPacketBuilder extends PacketBuilder {
        }
    }

+    /**
+     * Builds entity metadata packet from custom packet class
+     *
+     * @param   packet
+     *          Metadata packet
+     * @return  NMS metadata packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
+     */
    public Object build(PacketPlayOutEntityMetadata packet) throws ReflectiveOperationException {
-        return nms.newPacketPlayOutEntityMetadata.newInstance(packet.getEntityId(), packet.getDataWatcher().toNMS(), true);
+        if (nms.newPacketPlayOutEntityMetadata.getParameterCount() == 2) {
+            //1.19.3+
+            return nms.newPacketPlayOutEntityMetadata.newInstance(packet.getEntityId(), nms.DataWatcher_b.invoke(packet.getDataWatcher().toNMS()));
+        } else {
+            return nms.newPacketPlayOutEntityMetadata.newInstance(packet.getEntityId(), packet.getDataWatcher().toNMS(), true);
+        }
    }

    /**
-     * Builds entity spawn packet with given parameters
+     * Builds entity spawn packet from custom packet class
     *
-     * @return entity spawn packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * @param   packet
+     *          Spawn packet
+     * @return  NMS spawn packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutSpawnEntityLiving packet) throws ReflectiveOperationException {
        Object nmsPacket;
        if (nms.getMinorVersion() >= 17) {
-            nmsPacket = nms.newPacketPlayOutSpawnEntityLiving.newInstance(dummyEntity);
+            nmsPacket = nms.newPacketPlayOutSpawnEntityLiving.newInstance(nms.dummyEntity);
        } else {
            nmsPacket = nms.newPacketPlayOutSpawnEntityLiving.newInstance();
        }
        nms.setField(nmsPacket, nms.PacketPlayOutSpawnEntityLiving_ENTITYID, packet.getEntityId());
-        nms.setField(nmsPacket, nms.PacketPlayOutSpawnEntityLiving_ENTITYTYPE, entityIds.get(packet.getEntityType()));
        nms.setField(nmsPacket, nms.PacketPlayOutSpawnEntityLiving_YAW, (byte)(packet.getLocation().getYaw() * 256.0f / 360.0f));
        nms.setField(nmsPacket, nms.PacketPlayOutSpawnEntityLiving_PITCH, (byte)(packet.getLocation().getPitch() * 256.0f / 360.0f));
        if (nms.getMinorVersion() <= 14) {
@@ -273,19 +308,28 @@ public class BukkitPacketBuilder extends PacketBuilder {
            nms.setField(nmsPacket, nms.PacketPlayOutSpawnEntityLiving_Y, floor(packet.getLocation().getY()*32));
            nms.setField(nmsPacket, nms.PacketPlayOutSpawnEntityLiving_Z, floor(packet.getLocation().getZ()*32));
        }
+        int id = entityIds.get(packet.getEntityType());
+        if (nms.getMinorVersion() >= 19) {
+            nms.setField(nmsPacket, nms.PacketPlayOutSpawnEntityLiving_ENTITYTYPE, nms.EntityTypes_ARMOR_STAND); // :(
+        } else {
+            nms.setField(nmsPacket, nms.PacketPlayOutSpawnEntityLiving_ENTITYTYPE, id);
+        }
        return nmsPacket;
    }

    /**
-     * Builds entity teleport packet with given parameters
-     * @return entity teleport packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * Builds entity teleport packet from custom packet class
+     *
+     * @param   packet
+     *          Teleport packet
+     * @return  NMS teleport packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object build(PacketPlayOutEntityTeleport packet) throws ReflectiveOperationException {
        Object nmsPacket;
        if (nms.getMinorVersion() >= 17) {
-            nmsPacket = nms.newPacketPlayOutEntityTeleport.newInstance(dummyEntity);
+            nmsPacket = nms.newPacketPlayOutEntityTeleport.newInstance(nms.dummyEntity);
        } else {
            nmsPacket = nms.newPacketPlayOutEntityTeleport.newInstance();
        }
@@ -303,43 +347,114 @@ public class BukkitPacketBuilder extends PacketBuilder {
        nms.setField(nmsPacket, nms.PacketPlayOutEntityTeleport_PITCH, (byte) (packet.getLocation().getPitch()/360*256));
        return nmsPacket;
    }
-    
+
+    /**
+     * Writes data into NMS team from custom team packet. Used on 1.13+ servers.
+     *
+     * @param   packet
+     *          Packet to read from
+     * @param   clientVersion
+     *          Version of player
+     * @param   team
+     *          Team to write to
+     * @param   prefix
+     *          Prefix to use
+     * @param   suffix
+     *          Suffix to use
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
+     */
    private void createTeamModern(PacketPlayOutScoreboardTeam packet, ProtocolVersion clientVersion, Object team, String prefix, String suffix) throws ReflectiveOperationException {
        if (prefix != null) nms.ScoreboardTeam_setPrefix.invoke(team, toNMSComponent(IChatBaseComponent.optimizedComponent(prefix), clientVersion));
        if (suffix != null) nms.ScoreboardTeam_setSuffix.invoke(team, toNMSComponent(IChatBaseComponent.optimizedComponent(suffix), clientVersion));
        EnumChatFormat format = packet.getColor() != null ? packet.getColor() : EnumChatFormat.lastColorsOf(prefix);
-        nms.ScoreboardTeam_setColor.invoke(team, nms.EnumChatFormat_values[format.ordinal()]);
-        nms.ScoreboardTeam_setNameTagVisibility.invoke(team, String.valueOf(packet.getNameTagVisibility()).equals("always") ? nms.EnumNameTagVisibility_values[0] : nms.EnumNameTagVisibility_values[1]);
-        nms.ScoreboardTeam_setCollisionRule.invoke(team, String.valueOf(packet.getCollisionRule()).equals("always") ? nms.EnumTeamPush_values[0] : nms.EnumTeamPush_values[1]);
+        nms.ScoreboardTeam_setColor.invoke(team, Enum.valueOf(nms.EnumChatFormat, format.toString()));
+        nms.ScoreboardTeam_setNameTagVisibility.invoke(team, Enum.valueOf(nms.EnumNameTagVisibility, String.valueOf(packet.getNameTagVisibility()).equals("always") ? "ALWAYS" : "NEVER"));
+        nms.ScoreboardTeam_setCollisionRule.invoke(team, Enum.valueOf(nms.EnumTeamPush, String.valueOf(packet.getCollisionRule()).equals("always") ? "ALWAYS" : "NEVER"));
    }

+    /**
+     * Writes data into NMS team from custom team packet. Used on 1.12- servers.
+     *
+     * @param   packet
+     *          Packet to read from
+     * @param   team
+     *          Team to write to
+     * @param   prefix
+     *          Prefix to use
+     * @param   suffix
+     *          Suffix to use
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
+     */
    private void createTeamLegacy(PacketPlayOutScoreboardTeam packet, Object team, String prefix, String suffix) throws ReflectiveOperationException {
        if (prefix != null) nms.ScoreboardTeam_setPrefix.invoke(team, prefix);
        if (suffix != null) nms.ScoreboardTeam_setSuffix.invoke(team, suffix);
-        if (nms.getMinorVersion() >= 8) nms.ScoreboardTeam_setNameTagVisibility.invoke(team, String.valueOf(packet.getNameTagVisibility()).equals("always") ? nms.EnumNameTagVisibility_values[0] : nms.EnumNameTagVisibility_values[1]);
-        if (nms.getMinorVersion() >= 9) nms.ScoreboardTeam_setCollisionRule.invoke(team, String.valueOf(packet.getCollisionRule()).equals("always") ? nms.EnumTeamPush_values[0] : nms.EnumTeamPush_values[1]);
+        if (nms.getMinorVersion() >= 8) nms.ScoreboardTeam_setNameTagVisibility.invoke(team, Enum.valueOf(nms.EnumNameTagVisibility, String.valueOf(packet.getNameTagVisibility()).equals("always") ? "ALWAYS" : "NEVER"));
+        if (nms.getMinorVersion() >= 9) nms.ScoreboardTeam_setCollisionRule.invoke(team, Enum.valueOf(nms.EnumTeamPush, String.valueOf(packet.getCollisionRule()).equals("always") ? "ALWAYS" : "NEVER"));
    }
    
    @Override
    public PacketPlayOutPlayerInfo readPlayerInfo(Object nmsPacket, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        if (nms.getMinorVersion() < 8) return null;
-        EnumPlayerInfoAction action = EnumPlayerInfoAction.valueOf(nms.PacketPlayOutPlayerInfo_ACTION.get(nmsPacket).toString());
-        List<PlayerInfoData> listData = new ArrayList<>();
-        for (Object nmsData : (List<?>) nms.PacketPlayOutPlayerInfo_PLAYERS.get(nmsPacket)) {
-            Object nmsGameMode = nms.PlayerInfoData_getGamemode.invoke(nmsData);
-            EnumGamemode gameMode = (nmsGameMode == null) ? null : EnumGamemode.valueOf(nmsGameMode.toString());
-            GameProfile profile = (GameProfile) nms.PlayerInfoData_getProfile.invoke(nmsData);
-            Object nmsComponent = nms.PlayerInfoData_getDisplayName.invoke(nmsData);
-            IChatBaseComponent listName = nmsComponent == null ? null : fromNMSComponent(nmsComponent);
-            Skin skin = null;
-            if (!profile.getProperties().get("textures").isEmpty()) {
-                Property pr = (Property) profile.getProperties().get("textures").iterator().next();
-                skin = new Skin(pr.getValue(), pr.getSignature());
+        if (nms.ClientboundPlayerInfoRemovePacket != null) {
+            //1.19.3+
+            if (nms.ClientboundPlayerInfoRemovePacket.isInstance(nmsPacket)) {
+                List<UUID> entries = (List<UUID>) nms.ClientboundPlayerInfoRemovePacket_getEntries.invoke(nmsPacket);
+                return new PacketPlayOutPlayerInfo(
+                        EnumPlayerInfoAction.REMOVE_PLAYER,
+                        entries.stream().map(PlayerInfoData::new).collect(Collectors.toList())
+                );
            }
-            listData.add(new PlayerInfoData(profile.getName(), profile.getId(), skin,
-                    (int) nms.PlayerInfoData_getLatency.invoke(nmsData), gameMode, listName));
+            EnumSet<?> set = (EnumSet<?>) nms.PacketPlayOutPlayerInfo_ACTION.get(nmsPacket);
+            EnumPlayerInfoAction[] array = set.stream().map(action -> EnumPlayerInfoAction.valueOf(action.toString())).toArray(EnumPlayerInfoAction[]::new);
+            EnumSet<EnumPlayerInfoAction> actions = EnumSet.of(array[0], array);
+            List<PlayerInfoData> listData = new ArrayList<>();
+            for (Object nmsData : (List<?>) nms.PacketPlayOutPlayerInfo_PLAYERS.get(nmsPacket)) {
+                Object nmsGameMode = nms.PlayerInfoData_getGamemode.invoke(nmsData);
+                EnumGamemode gameMode = (nmsGameMode == null) ? null : EnumGamemode.valueOf(nmsGameMode.toString());
+                GameProfile profile = (GameProfile) nms.PlayerInfoData_getProfile.invoke(nmsData);
+                Object nmsComponent = nms.PlayerInfoData_getDisplayName.invoke(nmsData);
+                Skin skin = null;
+                if (!profile.getProperties().get("textures").isEmpty()) {
+                    Property pr = profile.getProperties().get("textures").iterator().next();
+                    skin = new Skin(pr.getValue(), pr.getSignature());
+                }
+                Object remoteChatSession = nms.PlayerInfoData_getProfilePublicKeyRecord.invoke(nmsData);
+                listData.add(
+                        new PlayerInfoData(
+                                profile.getName(),
+                                profile.getId(),
+                                skin,
+                                (boolean) nms.PlayerInfoData_isListed.invoke(nmsData),
+                                (int) nms.PlayerInfoData_getLatency.invoke(nmsData),
+                                gameMode,
+                                nmsComponent == null ? null : new WrappedChatComponent(nmsComponent),
+                                remoteChatSession == null ? null : (UUID) nms.RemoteChatSession$Data_getSessionId.invoke(remoteChatSession),
+                                remoteChatSession == null ? null : nms.RemoteChatSession$Data_getProfilePublicKey.invoke(remoteChatSession)));
+            }
+            return new PacketPlayOutPlayerInfo(actions, listData);
+        } else {
+            //1.19.2-
+            EnumPlayerInfoAction action = EnumPlayerInfoAction.valueOf(nms.PacketPlayOutPlayerInfo_ACTION.get(nmsPacket).toString());
+            List<PlayerInfoData> listData = new ArrayList<>();
+            for (Object nmsData : (List<?>) nms.PacketPlayOutPlayerInfo_PLAYERS.get(nmsPacket)) {
+                Object nmsGameMode = nms.PlayerInfoData_getGamemode.invoke(nmsData);
+                EnumGamemode gameMode = (nmsGameMode == null) ? null : EnumGamemode.valueOf(nmsGameMode.toString());
+                GameProfile profile = (GameProfile) nms.PlayerInfoData_getProfile.invoke(nmsData);
+                Object nmsComponent = nms.PlayerInfoData_getDisplayName.invoke(nmsData);
+                IChatBaseComponent listName = nmsComponent == null ? null : new WrappedChatComponent(nmsComponent);
+                Skin skin = null;
+                if (!profile.getProperties().get("textures").isEmpty()) {
+                    Property pr = profile.getProperties().get("textures").iterator().next();
+                    skin = new Skin(pr.getValue(), pr.getSignature());
+                }
+                Object profilePublicKey = nms.getMinorVersion() >= 19 ? nms.PlayerInfoData_getProfilePublicKeyRecord.invoke(nmsData) : null;
+                listData.add(new PlayerInfoData(profile.getName(), profile.getId(), skin, true,
+                        (int) nms.PlayerInfoData_getLatency.invoke(nmsData), gameMode, listName, null, profilePublicKey));
+            }
+            return new PacketPlayOutPlayerInfo(action, listData);
        }
-        return new PacketPlayOutPlayerInfo(action, listData);
    }

    @Override
@@ -359,12 +474,15 @@ public class BukkitPacketBuilder extends PacketBuilder {
    }

    /**
-     * Builds entity BossBar packet
-     * @param packet - packet to build
-     * @param clientVersion - client version
-     * @return entity BossBar packet
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * Builds entity packet representing requested BossBar packet using Wither on 1.8- clients.
+     *
+     * @param   packet
+     *          packet to build
+     * @param   clientVersion
+     *          client version
+     * @return  entity BossBar packet
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    private Object buildBossPacketEntity(PacketPlayOutBoss packet, ProtocolVersion clientVersion) throws ReflectiveOperationException {
        if (packet.getAction() == Action.UPDATE_STYLE) return null; //nothing to do here
@@ -377,13 +495,14 @@ public class BukkitPacketBuilder extends PacketBuilder {
        if (packet.getAction() == Action.UPDATE_PCT || packet.getAction() == Action.ADD) {
            float health = 300*packet.getPct();
            if (health == 0) health = 1;
-            w.helper().setHealth(health);
+            w.getHelper().setHealth(health);
        }
        if (packet.getAction() == Action.UPDATE_NAME || packet.getAction() == Action.ADD) {
-            w.helper().setCustomName(packet.getName(), clientVersion);
+            w.getHelper().setCustomName(packet.getName(), clientVersion);
        }
        if (packet.getAction() == Action.ADD) {
-            w.helper().setEntityFlags((byte) 32);
+            w.getHelper().setEntityFlags((byte) 32);
+            w.getHelper().setWitherInvulnerableTime(880); // Magic number
            return build(new PacketPlayOutSpawnEntityLiving(entityId, new UUID(0, 0), EntityType.WITHER, new Location(null, 0,0,0), w));
        } else {
            return build(new PacketPlayOutEntityMetadata(entityId, w));
@@ -392,8 +511,10 @@ public class BukkitPacketBuilder extends PacketBuilder {

    /**
     * A method taken from minecraft code used to convert double to int
-     * @param paramDouble double value
-     * @return int value
+     *
+     * @param   paramDouble
+     *          double value
+     * @return  int value
     */
    private int floor(double paramDouble){
        int i = (int)paramDouble;
@@ -401,154 +522,35 @@ public class BukkitPacketBuilder extends PacketBuilder {
    }

    /**
-     * Converts minecraft IChatBaseComponent into TAB's component class. Currently, does not support show_item hover event on 1.16+.
-     * @param component - component to convert
-     * @return converted component
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * Converts TAB's IChatBaseComponent into minecraft's component using String deserialization.
+     * If the requested component is found in cache, it is returned. If not, it is created, added into cache and returned.
+     * If {@code component} is {@code null}, returns {@code null}
+     *
+     * @param   component
+     *          component to convert
+     * @param   clientVersion
+     *          client version used to decide RGB conversion
+     * @return  converted component or {@code null} if {@code component} is {@code null}
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
-    private IChatBaseComponent fromNMSComponent(Object component) throws ReflectiveOperationException {
-        if (!nms.ChatComponentText.isInstance(component)) return null; //paper
-        IChatBaseComponent chat = new IChatBaseComponent((String) nms.ChatComponentText_text.get(component));
-        Object modifier = nms.ChatBaseComponent_modifier.get(component);
-        if (modifier != null) {
-            chat.getModifier().setColor(fromNMSColor(nms.ChatModifier_color.get(modifier)));
-            chat.getModifier().setBold((Boolean) nms.ChatModifier_bold.get(modifier));
-            chat.getModifier().setItalic((Boolean) nms.ChatModifier_italic.get(modifier));
-            chat.getModifier().setObfuscated((Boolean) nms.ChatModifier_obfuscated.get(modifier));
-            chat.getModifier().setStrikethrough((Boolean) nms.ChatModifier_strikethrough.get(modifier));
-            chat.getModifier().setUnderlined((Boolean) nms.ChatModifier_underlined.get(modifier));
-            Object clickEvent = nms.ChatModifier_clickEvent.get(modifier);
-            if (clickEvent != null) {
-                chat.getModifier().onClick(EnumClickAction.valueOf(nms.ChatClickable_action.get(clickEvent).toString().toUpperCase()), (String) nms.ChatClickable_value.get(clickEvent));
-            }
-            Object hoverEvent = nms.ChatModifier_hoverEvent.get(modifier);
-            if (hoverEvent != null) {
-                EnumHoverAction action;
-                IChatBaseComponent value;
-                if (nms.getMinorVersion() >= 16) {
-                    //does not support show_item on 1.16+
-                    JsonObject json = (JsonObject) nms.ChatHoverable_serialize.invoke(hoverEvent);
-                    action = EnumHoverAction.valueOf(json.get("action").getAsString().toUpperCase());
-                    value = IChatBaseComponent.deserialize(json.get("contents").getAsJsonObject().toString());
-                } else {
-                    action = EnumHoverAction.valueOf(nms.ChatHoverable_getAction.invoke(hoverEvent).toString().toUpperCase());
-                    value = fromNMSComponent(nms.ChatHoverable_getValue.invoke(hoverEvent));
-                }
-                chat.getModifier().onHover(action, value);
-            }
-        }
-        for (Object extra : (List<Object>) nms.ChatBaseComponent_extra.get(component)) {
-            chat.addExtra(fromNMSComponent(extra));
-        }
-        return chat;
-    }
-
-    private TextColor fromNMSColor(Object color) throws ReflectiveOperationException {
-        if (color == null) return null;
-        if (nms.getMinorVersion() >= 16) {
-            String name = (String) nms.ChatHexColor_name.get(color);
-            if (name != null) {
-                //legacy code
-                return new TextColor(EnumChatFormat.valueOf(name.toUpperCase(Locale.US)));
-            } else {
-                int rgb = (int) nms.ChatHexColor_rgb.get(color);
-                return new TextColor((rgb >> 16) & 0xFF, (rgb >> 8) & 0xFF, rgb & 0xFF);
-            }
-        } else {
-            return new TextColor(EnumChatFormat.valueOf(((Enum)color).name()));
-        }
+    public Object toNMSComponent(IChatBaseComponent component, ProtocolVersion clientVersion) throws ReflectiveOperationException {
+        if (component instanceof WrappedChatComponent) return ((WrappedChatComponent) component).get();
+        return (clientVersion.getMinorVersion() >= 16 ? componentCacheModern : componentCacheLegacy).get(component, clientVersion);
    }

    /**
-     * Converts TAB's IChatBaseComponent into minecraft's component. Currently, does not support hover event.
-     * @param component - component to convert
-     * @param clientVersion - client version used to decide RGB conversion
-     * @return converted component
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * Creates a new Scoreboard Objective with given name.
+     *
+     * @param   objectiveName
+     *          Objective name
+     * @return  NMS Objective
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
-    public Object toNMSComponent(IChatBaseComponent component, ProtocolVersion clientVersion) throws ReflectiveOperationException {
-        Object obj;
-        if (clientVersion.getMinorVersion() >= 16) {
-            if (componentCacheModern.containsKey(component)) return componentCacheModern.get(component);
-            obj = toNMSComponent0(component, clientVersion);
-            if (componentCacheModern.size() > 10000) componentCacheModern.clear();
-            componentCacheModern.put(component, obj);
-        } else {
-            if (componentCacheLegacy.containsKey(component)) return componentCacheLegacy.get(component);
-            obj = toNMSComponent0(component, clientVersion);
-            if (componentCacheLegacy.size() > 10000) componentCacheLegacy.clear();
-            componentCacheLegacy.put(component, obj);
-        }
-        return obj;
-    }
-
-    //separate method to prevent extras counting cpu again due to recursion and finally showing higher usage than real
-    private Object toNMSComponent0(IChatBaseComponent component, ProtocolVersion clientVersion) throws ReflectiveOperationException {
-        if (component == null) return null;
-        Object chat = nms.newChatComponentText.newInstance(component.getText());
-        Object modifier;
-        Object clickEvent = component.getModifier().getClickEvent() == null ? null : nms.newChatClickable.newInstance(Enum.valueOf((Class<Enum>) nms.EnumClickAction, 
-                component.getModifier().getClickEvent().getAction().toString().toUpperCase()), component.getModifier().getClickEvent().getValue());
-        if (nms.getMinorVersion() >= 16) {
-            Object color = null;
-            if (component.getModifier().getColor() != null) {
-                if (clientVersion.getMinorVersion() >= 16) {
-                    color = nms.ChatHexColor_ofInt.invoke(null, (component.getModifier().getColor().getRed() << 16) + (component.getModifier().getColor().getGreen() << 8) + component.getModifier().getColor().getBlue());
-                } else {
-                    color = nms.ChatHexColor_ofString.invoke(null, component.getModifier().getColor().getLegacyColor().toString().toLowerCase());
-                }
-            }
-            Object hoverEvent = null;
-            if (component.getModifier().getHoverEvent() != null) {
-                Object nmsAction = nms.EnumHoverAction_a.invoke(null, component.getModifier().getHoverEvent().getAction().toString().toLowerCase());
-                switch (component.getModifier().getHoverEvent().getAction()) {
-                case SHOW_TEXT:
-                    hoverEvent = nms.newChatHoverable.newInstance(nmsAction, toNMSComponent0(component.getModifier().getHoverEvent().getValue(), clientVersion));
-                    break;
-                case SHOW_ENTITY:
-                    hoverEvent = nms.EnumHoverAction_fromJson.invoke(nmsAction, ((ChatComponentEntity) component.getModifier().getHoverEvent().getValue()).toJson());
-                    break;
-                case SHOW_ITEM:
-                    hoverEvent = nms.EnumHoverAction_fromLegacyComponent.invoke(nmsAction, toNMSComponent0(component.getModifier().getHoverEvent().getValue(), clientVersion));
-                    break;
-                default:
-                    break;
-                }
-            }
-            modifier = nms.newChatModifier.newInstance(
-                    color,
-                    component.getModifier().getBold(),
-                    component.getModifier().getItalic(),
-                    component.getModifier().getUnderlined(),
-                    component.getModifier().getStrikethrough(),
-                    component.getModifier().getObfuscated(),
-                    clickEvent, hoverEvent, null, null);
-        } else {
-            modifier = nms.newChatModifier.newInstance();
-            if (component.getModifier().getColor() != null) nms.setField(modifier, nms.ChatModifier_color, Enum.valueOf((Class<Enum>) nms.EnumChatFormat, component.getModifier().getColor().getLegacyColor().toString()));
-            nms.setField(modifier, nms.ChatModifier_bold, component.getModifier().getBold());
-            nms.setField(modifier, nms.ChatModifier_italic, component.getModifier().getItalic());
-            nms.setField(modifier, nms.ChatModifier_underlined, component.getModifier().getUnderlined());
-            nms.setField(modifier, nms.ChatModifier_strikethrough, component.getModifier().getStrikethrough());
-            nms.setField(modifier, nms.ChatModifier_obfuscated, component.getModifier().getObfuscated());
-            if (clickEvent != null) nms.setField(modifier, nms.ChatModifier_clickEvent, clickEvent);
-            if (component.getModifier().getHoverEvent() != null) {
-                nms.setField(modifier, nms.ChatModifier_hoverEvent, nms.newChatHoverable.newInstance(nms.EnumHoverAction_a.invoke(null, 
-                        component.getModifier().getHoverEvent().getAction().toString().toLowerCase()), toNMSComponent0(component.getModifier().getHoverEvent().getValue(), clientVersion)));
-            }
-        }
-        nms.setField(chat, nms.ChatBaseComponent_modifier, modifier);
-        for (IChatBaseComponent extra : component.getExtra()) {
-            nms.ChatComponentText_addSibling.invoke(chat, toNMSComponent0(extra, clientVersion));
-        }
-        return chat;
-    }
-
    private Object newScoreboardObjective(String objectiveName) throws ReflectiveOperationException {
        if (nms.getMinorVersion() >= 13) {
-            return nms.newScoreboardObjective.newInstance(null, objectiveName, null, nms.newChatComponentText.newInstance(""), null);
+            return nms.newScoreboardObjective.newInstance(null, objectiveName, null, toNMSComponent(new IChatBaseComponent(""), TabAPI.getInstance().getServerVersion()), null);
        }
        return nms.newScoreboardObjective.newInstance(null, objectiveName, nms.IScoreboardCriteria_self.get(null));
    }
@@ -7,18 +7,22 @@ import java.util.function.Function;
 import io.netty.channel.ChannelDuplexHandler;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelPromise;
+import lombok.AllArgsConstructor;
 import me.neznamy.tab.api.TabFeature;
 import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.api.util.Preconditions;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
-import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.platforms.bukkit.nms.storage.NMSStorage;
+import me.neznamy.tab.api.TabConstants;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.features.PipelineInjector;
+import me.neznamy.tab.shared.features.sorting.Sorting;
 import org.jetbrains.annotations.NotNull;

+/**
+ * Pipeline injection for bukkit
+ */
 public class BukkitPipelineInjector extends PipelineInjector {

-    //nms storage
+    /** NMS data storage */
    private final NMSStorage nms = NMSStorage.getInstance();

    /**
@@ -36,20 +40,12 @@ public class BukkitPipelineInjector extends PipelineInjector {
    /**
     * Custom channel duplex handler override
     */
+    @AllArgsConstructor
    public class BukkitChannelDuplexHandler extends ChannelDuplexHandler {

-        //injected player
+        /** Injected player */
        private final TabPlayer player;

-        /**
-         * Constructs new instance with given player
-         * @param player - player to inject
-         */
-        public BukkitChannelDuplexHandler(TabPlayer player) {
-            Preconditions.checkNotNull(player, "player");
-            this.player = player;
-        }
-
        @Override
        public void channelRead(@NotNull ChannelHandlerContext context, @NotNull Object packet) {
            try {
@@ -63,12 +59,15 @@ public class BukkitPipelineInjector extends PipelineInjector {
        @Override
        public void write(ChannelHandlerContext context, Object packet, ChannelPromise channelPromise) {
            try {
-                if (nms.PacketPlayOutPlayerInfo.isInstance(packet)) {
+                if (nms.PacketPlayOutPlayerInfo.isInstance(packet) ||
+                        (nms.ClientboundPlayerInfoRemovePacket != null && nms.ClientboundPlayerInfoRemovePacket.isInstance(packet))) {
                    super.write(context, TAB.getInstance().getFeatureManager().onPacketPlayOutPlayerInfo(player, packet), channelPromise);
                    return;
                }
-                if (antiOverrideTeams && nms.PacketPlayOutScoreboardTeam != null && nms.PacketPlayOutScoreboardTeam.isInstance(packet)) {
+                if (antiOverrideTeams && nms.PacketPlayOutScoreboardTeam.isInstance(packet)) {
+                    long time = System.nanoTime();
                    modifyPlayers(packet);
+                    TAB.getInstance().getCPUManager().addTime("NameTags", TabConstants.CpuUsageCategory.ANTI_OVERRIDE, System.nanoTime()-time);
                    super.write(context, packet, channelPromise);
                    return;
                }
@@ -91,13 +90,16 @@ public class BukkitPipelineInjector extends PipelineInjector {

        /**
         * Removes all real players from team if packet does not come from TAB and reports this to override log
-         * @param packetPlayOutScoreboardTeam - team packet
-         * @throws    ReflectiveOperationException
-         *             nmsGameMode
+         *
+         * @param   packetPlayOutScoreboardTeam
+         *          team packet
+         * @throws  ReflectiveOperationException
+         *          nmsGameMode
         */
        @SuppressWarnings("unchecked")
        private void modifyPlayers(Object packetPlayOutScoreboardTeam) throws ReflectiveOperationException {
-            long time = System.nanoTime();
+            int action = nms.PacketPlayOutScoreboardTeam_ACTION.getInt(packetPlayOutScoreboardTeam);
+            if (action == 1 || action == 2 || action == 4) return;
            Collection<String> players = (Collection<String>) nms.PacketPlayOutScoreboardTeam_PLAYERS.get(packetPlayOutScoreboardTeam);
            String teamName = (String) nms.PacketPlayOutScoreboardTeam_NAME.get(packetPlayOutScoreboardTeam);
            if (players == null) return;
@@ -109,17 +111,26 @@ public class BukkitPipelineInjector extends PipelineInjector {
                    newList.add(entry);
                    continue;
                }
+                Sorting sorting = (Sorting) TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.SORTING);
                if (!((TabFeature)TAB.getInstance().getTeamManager()).isDisabledPlayer(p) &&
-                        !TAB.getInstance().getTeamManager().hasTeamHandlingPaused(p) && !teamName.equals(p.getTeamName())) {
-                    logTeamOverride(teamName, p.getName(), p.getTeamName());
+                        !TAB.getInstance().getTeamManager().hasTeamHandlingPaused(p) && !teamName.equals(sorting.getShortTeamName(p))) {
+                    logTeamOverride(teamName, p.getName(), sorting.getShortTeamName(p));
                } else {
                    newList.add(entry);
                }
            }
            nms.setField(packetPlayOutScoreboardTeam, nms.PacketPlayOutScoreboardTeam_PLAYERS, newList);
-            TAB.getInstance().getCPUManager().addTime("NameTags", TabConstants.CpuUsageCategory.ANTI_OVERRIDE, System.nanoTime()-time);
        }

+        /**
+         * Returns player with matching game profile name. This is different from
+         * real name when a nick plugin changing names of players is used. If no
+         * player was found, returns {@code null}.
+         *
+         * @param   name
+         *          Game profile name
+         * @return  Player with matching game profile name
+         */
        private TabPlayer getPlayer(String name) {
            for (TabPlayer p : TAB.getInstance().getOnlinePlayers()) {
                if (p.getNickname().equals(name)) return p;
@@ -1,21 +1,21 @@
 package me.neznamy.tab.platforms.bukkit;

-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.text.NumberFormat;
-import java.util.Locale;
-
+import me.neznamy.tab.api.TabConstants;
+import me.neznamy.tab.api.TabPlayer;
+import me.neznamy.tab.api.placeholder.PlaceholderManager;
+import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.placeholders.UniversalPlaceholderRegistry;
+import net.milkbowl.vault.chat.Chat;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.RegisteredServiceProvider;

-import com.earth2me.essentials.Essentials;
-
-import me.neznamy.tab.api.placeholder.PlaceholderManager;
-import me.neznamy.tab.shared.TAB;
-import me.neznamy.tab.shared.placeholders.UniversalPlaceholderRegistry;
-import net.milkbowl.vault.chat.Chat;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.text.NumberFormat;
+import java.util.Locale;
+import java.util.UUID;

 /**
 * Bukkit registry to register bukkit-only and universal placeholders
@@ -25,26 +25,32 @@ public class BukkitPlaceholderRegistry extends UniversalPlaceholderRegistry {
    /** Number formatter for 2 decimal places */
    private final NumberFormat numberFormat = NumberFormat.getNumberInstance(Locale.US);

-    private Object chat;
-    private final Plugin essentials = Bukkit.getPluginManager().getPlugin("Essentials");
+    /** Vault Chat hook */
+    private Chat chat;
+
+    /** NMS server to get TPS from on spigot */
    private Object server;
+
+    /** TPS field*/
    private Field recentTps;
-    private boolean paperTps;
-    private boolean paperMspt;
-    private Method playerIsAfk;
+
+    /** Detection for presence of Paper's TPS getter */
+    private Method paperTps;
+
+    /** Detection for presence of Paper's MSPT getter */
+    private Method paperMspt;
+
+    /** Detection for presence of Purpur's AFK getter */
+    private Method purpurIsAfk;

    /**
-     * Constructs new instance with given parameter
+     * Constructs new instance and loads hooks
     */
    public BukkitPlaceholderRegistry() {
        numberFormat.setMaximumFractionDigits(2);
-        try {
-            if (Bukkit.getPluginManager().isPluginEnabled("Vault")) {
-                RegisteredServiceProvider<?> rspChat = Bukkit.getServicesManager().getRegistration(Class.forName("net.milkbowl.vault.chat.Chat"));
-                if (rspChat != null) chat = rspChat.getProvider();
-            }
-        } catch (ClassNotFoundException e) {
-            //modded server without vault
+        if (Bukkit.getPluginManager().isPluginEnabled(TabConstants.Plugin.VAULT)) {
+            RegisteredServiceProvider<Chat> rspChat = Bukkit.getServicesManager().getRegistration(Chat.class);
+            if (rspChat != null) chat = rspChat.getProvider();
        }
        try {
            server = Bukkit.getServer().getClass().getMethod("getServer").invoke(Bukkit.getServer());
@@ -52,72 +58,64 @@ public class BukkitPlaceholderRegistry extends UniversalPlaceholderRegistry {
        } catch (ReflectiveOperationException e) {
            //not spigot
        }
-        try {
-            Bukkit.class.getMethod("getTPS");
-            paperTps = true;
-        } catch (NoSuchMethodException e) {
-            //not paper
-        }
-        try {
-            Bukkit.class.getMethod("getAverageTickTime");
-            paperMspt = true;
-        } catch (NoSuchMethodException e) {
-            //not paper
-        }
-        try {
-            playerIsAfk = Player.class.getMethod("isAfk");
-        } catch (NoSuchMethodException e) {
-            //not purpur
-        }
+        try { paperTps = Bukkit.class.getMethod("getTPS"); } catch (NoSuchMethodException ignored) {}
+        try { paperMspt = Bukkit.class.getMethod("getAverageTickTime"); } catch (NoSuchMethodException ignored) {}
+        try { purpurIsAfk = Player.class.getMethod("isAfk"); } catch (NoSuchMethodException ignored) {}
    }

    @SuppressWarnings("deprecation")
    @Override
    public void registerPlaceholders(PlaceholderManager manager) {
-        super.registerPlaceholders(manager);
-        manager.registerPlayerPlaceholder("%displayname%", 500, p -> ((Player) p.getPlayer()).getDisplayName());
-        if (paperTps) {
-            manager.registerServerPlaceholder("%tps%", 1000, () -> formatTPS(Bukkit.getTPS()[0]));
+        manager.registerPlayerPlaceholder(TabConstants.Placeholder.DISPLAY_NAME, 500, p -> ((Player) p.getPlayer()).getDisplayName());
+        if (paperTps != null) {
+            manager.registerServerPlaceholder(TabConstants.Placeholder.TPS, 1000, () -> formatTPS(Bukkit.getTPS()[0]));
        } else if (recentTps != null) {
-            manager.registerServerPlaceholder("%tps%", 1000, () -> {
+            manager.registerServerPlaceholder(TabConstants.Placeholder.TPS, 1000, () -> {
                try {
                    return formatTPS(((double[]) recentTps.get(server))[0]);
                } catch (IllegalAccessException e) {
-                    return "-1";
+                    return -1;
                }
            });
        } else {
-            manager.registerServerPlaceholder("%tps%", -1, () -> "-1").enableTriggerMode();
+            manager.registerServerPlaceholder(TabConstants.Placeholder.TPS, -1, () -> -1);
        }
-        if (paperMspt) {
-            manager.registerServerPlaceholder("%mspt%", 1000, () -> numberFormat.format(Bukkit.getAverageTickTime()));
+        if (paperMspt != null) {
+            manager.registerServerPlaceholder(TabConstants.Placeholder.MSPT, 1000, () -> numberFormat.format(Bukkit.getAverageTickTime()));
        }
-        manager.registerPlayerPlaceholder("%afk%", 500, p -> {
-            if (essentials != null && ((Essentials)essentials).getUser(p.getUniqueId()).isAfk()) return true;
-            if (playerIsAfk == null) return false;
-            try {
-                return playerIsAfk.invoke(p.getPlayer());
-            } catch (ReflectiveOperationException exception) {
-                TAB.getInstance().getErrorManager().printError("Failed to get AFK status of " + p.getName() + " using Purpur", exception);
+        Plugin essentials = Bukkit.getPluginManager().getPlugin(TabConstants.Plugin.ESSENTIALS);
+        manager.registerPlayerPlaceholder(TabConstants.Placeholder.AFK, 500, p -> {
+            if (essentials != null) {
+                try {
+                    Object user = essentials.getClass().getMethod("getUser", UUID.class).invoke(essentials, p.getUniqueId());
+                    if ((boolean) user.getClass().getMethod("isAfk").invoke(user)) return true;
+                } catch (ReflectiveOperationException e) {
+                    TAB.getInstance().getErrorManager().printError("Failed to get AFK status of " + p.getName() + " using Essentials", e);
+                }
            }
-            return false;
-        });
-        manager.registerPlayerPlaceholder("%essentialsnick%", 1000, p -> {
-            String nickname = null;
-            if (essentials != null)
-                nickname = ((Essentials)essentials).getUser(p.getUniqueId()).getNickname();
-            return nickname == null || nickname.length() == 0 ? p.getName() : nickname;
+            return purpurIsAfk != null && ((Player)p.getPlayer()).isAfk();
        });
+        // Removed placeholder, keeping the implementation to avoid placeholder breaking for users on update
+        manager.registerPlayerPlaceholder(TabConstants.Placeholder.ESSENTIALS_NICK, -1, TabPlayer::getName);
+
        if (chat != null) {
-            manager.registerPlayerPlaceholder("%vault-prefix%", 1000, p -> ((Chat) chat).getPlayerPrefix((Player) p.getPlayer()));
-            manager.registerPlayerPlaceholder("%vault-suffix%", 1000, p -> ((Chat) chat).getPlayerSuffix((Player) p.getPlayer()));
+            manager.registerPlayerPlaceholder(TabConstants.Placeholder.VAULT_PREFIX, 1000, p -> chat.getPlayerPrefix((Player) p.getPlayer()));
+            manager.registerPlayerPlaceholder(TabConstants.Placeholder.VAULT_SUFFIX, 1000, p -> chat.getPlayerSuffix((Player) p.getPlayer()));
        } else {
-            manager.registerServerPlaceholder("%vault-prefix%", -1, () -> "").enableTriggerMode();
-            manager.registerServerPlaceholder("%vault-suffix%", -1, () -> "").enableTriggerMode();
+            manager.registerServerPlaceholder(TabConstants.Placeholder.VAULT_PREFIX, -1, () -> "");
+            manager.registerServerPlaceholder(TabConstants.Placeholder.VAULT_SUFFIX, -1, () -> "");
        }
-        manager.registerPlayerPlaceholder("%health%", 100, p -> (int) Math.ceil(((Player) p.getPlayer()).getHealth()));
+        manager.registerPlayerPlaceholder(TabConstants.Placeholder.HEALTH, 100, p -> (int) Math.ceil(((Player) p.getPlayer()).getHealth()));
+        super.registerPlaceholders(manager);
    }

+    /**
+     * Formats TPS using number formatter with 2 decimal places.
+     *
+     * @param   tps
+     *          TPS to format
+     * @return  Formatted TPS as a String
+     */
    private String formatTPS(double tps) {
        return numberFormat.format(Math.min(20, tps));
    }
@@ -1,22 +1,26 @@
 package me.neznamy.tab.platforms.bukkit;

-import com.earth2me.essentials.Essentials;
 import com.viaversion.viaversion.api.Via;
+import lombok.Getter;
+import lombok.Setter;
 import me.clip.placeholderapi.PlaceholderAPI;
+import me.neznamy.tab.api.TabConstants;
+import me.neznamy.tab.api.TabFeature;
 import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.api.util.Preconditions;
-import me.neznamy.tab.platforms.bukkit.event.TabLoadEvent;
-import me.neznamy.tab.platforms.bukkit.event.TabPlayerLoadEvent;
+import me.neznamy.tab.api.chat.EnumChatFormat;
+import me.neznamy.tab.api.chat.rgb.RGBUtils;
+import me.neznamy.tab.api.util.ReflectionUtils;
 import me.neznamy.tab.platforms.bukkit.features.BukkitTabExpansion;
 import me.neznamy.tab.platforms.bukkit.features.PerWorldPlayerList;
 import me.neznamy.tab.platforms.bukkit.features.PetFix;
 import me.neznamy.tab.platforms.bukkit.features.WitherBossBar;
 import me.neznamy.tab.platforms.bukkit.features.unlimitedtags.BukkitNameTagX;
 import me.neznamy.tab.platforms.bukkit.permission.Vault;
-import me.neznamy.tab.shared.Platform;
 import me.neznamy.tab.shared.TAB;
-import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.shared.backend.BackendPlatform;
+import me.neznamy.tab.shared.features.PipelineInjector;
 import me.neznamy.tab.shared.features.PlaceholderManagerImpl;
+import me.neznamy.tab.shared.features.TabExpansion;
 import me.neznamy.tab.shared.features.bossbar.BossBarManagerImpl;
 import me.neznamy.tab.shared.features.nametags.NameTag;
 import me.neznamy.tab.shared.permission.LuckPerms;
@@ -29,109 +33,113 @@ import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.RegisteredServiceProvider;
 import org.bukkit.plugin.java.JavaPlugin;
+import org.jetbrains.annotations.Nullable;

 import java.util.Collection;

 /**
 * Implementation of Platform interface for Bukkit platform
 */
-public class BukkitPlatform extends Platform {
+public class BukkitPlatform extends BackendPlatform {

    /** Plugin instance for registering tasks and events */
    private final JavaPlugin plugin;

    /** Variables checking presence of other plugins to hook into */
-    private final boolean placeholderAPI = Bukkit.getPluginManager().isPluginEnabled("PlaceholderAPI");
-    private boolean libsDisguises = Bukkit.getPluginManager().isPluginEnabled("LibsDisguises");
-    private final Plugin essentials = Bukkit.getPluginManager().getPlugin("Essentials");
+    private final boolean placeholderAPI = Bukkit.getPluginManager().isPluginEnabled(TabConstants.Plugin.PLACEHOLDER_API);
+    @Getter @Setter private boolean libsDisguisesEnabled = Bukkit.getPluginManager().isPluginEnabled(TabConstants.Plugin.LIBS_DISGUISES);
    private Plugin viaVersion;
-    private final boolean protocolSupport = Bukkit.getPluginManager().isPluginEnabled("ProtocolSupport");
+    private final boolean protocolSupport = Bukkit.getPluginManager().isPluginEnabled(TabConstants.Plugin.PROTOCOL_SUPPORT);

    /**
     * Constructs new instance with given plugin parameter
-     * @param    plugin
-     *             plugin instance
+     *
+     * @param   plugin
+     *          plugin instance
     */
    public BukkitPlatform(JavaPlugin plugin) {
        super(new BukkitPacketBuilder());
-        Preconditions.checkNotNull(plugin, "plugin");
        this.plugin = plugin;
+        if (Bukkit.getPluginManager().isPluginEnabled(TabConstants.Plugin.VIAVERSION)) {
+            if (ReflectionUtils.classExists("com.viaversion.viaversion.api.Via")) {
+                viaVersion = Bukkit.getPluginManager().getPlugin(TabConstants.Plugin.VIAVERSION);
+            } else {
+                TAB.getInstance().sendConsoleMessage("&cAn outdated version of ViaVersion (" + getPluginVersion(TabConstants.Plugin.VIAVERSION) + ") was detected.", true);
+                TAB.getInstance().sendConsoleMessage("&cTAB only supports ViaVersion 4.0.0 and above. Disabling ViaVersion hook.", true);
+                TAB.getInstance().sendConsoleMessage("&cThis might cause problems, such as limitations still being present for latest MC clients as well as RGB not working.", true);
+            }
+        }
    }

    @Override
    public PermissionPlugin detectPermissionPlugin() {
-        if (Bukkit.getPluginManager().isPluginEnabled("LuckPerms")) {
-            return new LuckPerms(getPluginVersion("LuckPerms"));
-        } else if (Bukkit.getPluginManager().isPluginEnabled("Vault")) {
+        if (Bukkit.getPluginManager().isPluginEnabled(TabConstants.Plugin.LUCKPERMS)) {
+            return new LuckPerms(getPluginVersion(TabConstants.Plugin.LUCKPERMS));
+        } else if (Bukkit.getPluginManager().isPluginEnabled(TabConstants.Plugin.VAULT)) {
            RegisteredServiceProvider<Permission> provider = Bukkit.getServicesManager().getRegistration(Permission.class);
            if (provider == null) return new None();
-            return new Vault(provider.getProvider(), getPluginVersion("Vault"));
+            return new Vault(provider.getProvider(), getPluginVersion(TabConstants.Plugin.VAULT));
        } else {
            return new None();
        }
    }

-    @Override
-    public void loadFeatures() {
-        if (Bukkit.getPluginManager().isPluginEnabled("ViaVersion")) {
-            try {
-                Class.forName("com.viaversion.viaversion.api.Via");
-                viaVersion = Bukkit.getPluginManager().getPlugin("ViaVersion");
-            } catch (ClassNotFoundException e) {
-                TAB.getInstance().sendConsoleMessage("&cAn outdated version of ViaVersion (" + getPluginVersion("ViaVersion") + ") was detected.", true);
-                TAB.getInstance().sendConsoleMessage("&cTAB only supports ViaVersion 4.0.0 and above. Disabling ViaVersion hook.", true);
-                TAB.getInstance().sendConsoleMessage("&cThis might cause problems, such as limitations still being present for latest MC clients as well as RGB not working.", true);
-            }
-        }
-        if (Bukkit.getPluginManager().isPluginEnabled("Tablisknu")) {
-            TAB.getInstance().sendConsoleMessage("&cDetected plugin \"Tablisknu\", which causes TAB to not work properly. Consider removing the plugin.", true);
-        }
-        if (Bukkit.getPluginManager().isPluginEnabled("SkBee")) {
-            TAB.getInstance().sendConsoleMessage("&cDetected plugin \"SkBee\", which causes TAB's scoreboard to not show. Consider removing the plugin.", true);
-        }
-        TAB tab = TAB.getInstance();
-        if (tab.getConfiguration().isPipelineInjection())
-            tab.getFeatureManager().registerFeature(TabConstants.Feature.PIPELINE_INJECTION, new BukkitPipelineInjector());
-        new BukkitPlaceholderRegistry().registerPlaceholders(tab.getPlaceholderManager());
-        if (tab.getConfiguration().getConfig().getBoolean("scoreboard-teams.enabled", true)) {
-            if (tab.getConfiguration().getConfig().getBoolean("scoreboard-teams.unlimited-nametag-mode.enabled", false) && tab.getServerVersion().getMinorVersion() >= 8) {
-                tab.getFeatureManager().registerFeature(TabConstants.Feature.UNLIMITED_NAME_TAGS, new BukkitNameTagX(plugin));
-            } else {
-                tab.getFeatureManager().registerFeature(TabConstants.Feature.NAME_TAGS, new NameTag());
-            }
-        }
-        tab.loadUniversalFeatures();
-        if (tab.getConfiguration().getConfig().getBoolean("bossbar.enabled", false)) {
-            if (tab.getServerVersion().getMinorVersion() < 9) {
-                tab.getFeatureManager().registerFeature(TabConstants.Feature.BOSS_BAR, new WitherBossBar(plugin));
-            } else {
-                tab.getFeatureManager().registerFeature(TabConstants.Feature.BOSS_BAR, new BossBarManagerImpl());
-            }
-        }
-        if (tab.getServerVersion().getMinorVersion() >= 9 && tab.getConfiguration().getConfig().getBoolean("fix-pet-names.enabled", false))
-            tab.getFeatureManager().registerFeature(TabConstants.Feature.PET_FIX, new PetFix());
-        if (tab.getConfiguration().getConfig().getBoolean("per-world-playerlist.enabled", false))
-            tab.getFeatureManager().registerFeature(TabConstants.Feature.PER_WORLD_PLAYER_LIST, new PerWorldPlayerList(plugin));
-        if (placeholderAPI && tab.getConfiguration().getConfig().getBoolean("placeholders.register-tab-expansion", true)) {
-            BukkitTabExpansion expansion = new BukkitTabExpansion();
-            expansion.register();
-            TAB.getInstance().getPlaceholderManager().setTabExpansion(expansion);
-        }
-        for (Player p : getOnlinePlayers()) {
-            tab.addPlayer(new BukkitTabPlayer(p, getProtocolVersion(p)));
-        }
+    public BossBarManagerImpl getLegacyBossBar() {
+        return new WitherBossBar(plugin);
    }

    @Override
    public String getPluginVersion(String plugin) {
-        Preconditions.checkNotNull(plugin, "plugin");
        Plugin pl = Bukkit.getPluginManager().getPlugin(plugin);
        return pl == null ? null : pl.getDescription().getVersion();
    }

+    @Override
+    public void loadPlayers() {
+        for (Player p : getOnlinePlayers()) {
+            TAB.getInstance().addPlayer(new BukkitTabPlayer(p, getProtocolVersion(p)));
+        }
+    }
+
+    @Override
+    public void registerPlaceholders() {
+        new BukkitPlaceholderRegistry().registerPlaceholders(TAB.getInstance().getPlaceholderManager());
+    }
+
+    @Override
+    public @Nullable PipelineInjector getPipelineInjector() {
+        return new BukkitPipelineInjector();
+    }
+
+    @Override
+    public NameTag getUnlimitedNametags() {
+        return new BukkitNameTagX(plugin);
+    }
+
+    @Override
+    public TabExpansion getTabExpansion() {
+        if (placeholderAPI) {
+            BukkitTabExpansion expansion = new BukkitTabExpansion();
+            expansion.register();
+            return expansion;
+        }
+        return null;
+    }
+
+    @Override
+    public TabFeature getPetFix() {
+        return new PetFix();
+    }
+
+    @Override
+    public @Nullable TabFeature getPerWorldPlayerlist() {
+        return new PerWorldPlayerList(plugin);
+    }
+
    /**
     * Returns online players from Bukkit API
-     * @return    online players from Bukkit API
+     *
+     * @return  online players from Bukkit API
     */
    @SuppressWarnings("unchecked")
    private Player[] getOnlinePlayers() {
@@ -152,7 +160,6 @@ public class BukkitPlatform extends Platform {

    @Override
    public void registerUnknownPlaceholder(String identifier) {
-        Preconditions.checkNotNull(identifier, "identifier");
        PlaceholderManagerImpl pl = TAB.getInstance().getPlaceholderManager();
        if (identifier.startsWith("%rel_")) {
            //relational placeholder
@@ -189,58 +196,12 @@ public class BukkitPlatform extends Platform {
        }
    }

-    @Override
-    public void callLoadEvent() {
-        Bukkit.getPluginManager().callEvent(new TabLoadEvent());
-    }
-
-    @Override
-    public void callLoadEvent(TabPlayer player) {
-        Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, () -> Bukkit.getPluginManager().callEvent(new TabPlayerLoadEvent(player)));
-    }
-
-    /**
-     * Returns status of LibsDisguises plugin presence
-     * @return    {@code true} if plugin is enabled, {@code false} if not
-     */
-    public boolean isLibsDisguisesEnabled() {
-        return libsDisguises;
-    }
-
-    /**
-     * Sets LibsDisguises presence status to provided value. This is used
-     * to disable LibsDisguises hook in case the plugin is not correctly loaded
-     * for any reason to avoid error spam in the hook.
-     * @param    enabled
-     *             New status of LibsDisguises presence
-     */
-    public void setLibsDisguisesEnabled(boolean enabled) {
-        libsDisguises = enabled;
-    }
-
-    /**
-     * Returns Essentials' main class if the plugin is installed, {@code null} if not
-     * @return    Essentials instance or {@code null} if plugin is not installed
-     */
-    public Essentials getEssentials() {
-        return (Essentials) essentials;
-    }
-
-    @Override
-    public boolean isProxy() {
-        return false;
-    }
-
-    @Override
-    public String getConfigName() {
-        return "bukkitconfig.yml";
-    }
-
    /**
     * Gets protocol version of requested player and returns it.
-     * @param    player
-     *             Player to get protocol version of
-     * @return    protocol version of the player
+     *
+     * @param   player
+     *          Player to get protocol version of
+     * @return  protocol version of the player
     */
    public int getProtocolVersion(Player player) {
        if (protocolSupport){
@@ -256,15 +217,16 @@ public class BukkitPlatform extends Platform {

    /**
     * Returns protocol version of requested player using ProtocolSupport
-     * @param    player
-     *             Player to get protocol version of
-     * @return    protocol version of the player using ProtocolSupport
+     *
+     * @param   player
+     *          Player to get protocol version of
+     * @return  protocol version of the player using ProtocolSupport
     */
    private int getProtocolVersionPS(Player player){
        try {
            Object protocolVersion = Class.forName("protocolsupport.api.ProtocolSupportAPI").getMethod("getProtocolVersion", Player.class).invoke(null, player);
            int version = (int) protocolVersion.getClass().getMethod("getId").invoke(protocolVersion);
-            TAB.getInstance().debug("ProtocolSupport returned protocol version " + version + " for " + player.getName() + "(online=" + player.isOnline() + ")");
+            TAB.getInstance().debug("ProtocolSupport returned protocol version " + version + " for " + player.getName() + " (online=" + player.isOnline() + ")");
            return version;
        } catch (ReflectiveOperationException e) {
            TAB.getInstance().getErrorManager().printError(String.format("Failed to get protocol version of %s using ProtocolSupport", player.getName()), e);
@@ -274,9 +236,10 @@ public class BukkitPlatform extends Platform {

    /**
     * Returns protocol version of requested player using ViaVersion
-     * @param    player
-     *             Player to get protocol version of
-     * @return    protocol version of the player using ViaVersion
+     *
+     * @param   player
+     *          Player to get protocol version of
+     * @return  protocol version of the player using ViaVersion
     */
    private int getProtocolVersionVia(Player player, int retryLevel){
        try {
@@ -290,7 +253,7 @@ public class BukkitPlatform extends Platform {
                Thread.sleep(5);
                return getProtocolVersionVia(player, retryLevel + 1);
            }
-            TAB.getInstance().debug("ViaVersion returned protocol version " + version + " for " + player.getName() + "(online=" + player.isOnline() + ")");
+            TAB.getInstance().debug("ViaVersion returned protocol version " + version + " for " + player.getName() + " (online=" + player.isOnline() + ")");
            return version;
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
@@ -300,4 +263,22 @@ public class BukkitPlatform extends Platform {
            return TAB.getInstance().getServerVersion().getNetworkId();
        }
    }
+
+    /**
+     * Sends console message using ConsoleCommandSender, due to
+     * Paper not translating colors correctly in Logger messages
+     * and to allow RGB (at least on Paper, doesn't work on spigot)
+     *
+     * @param   message
+     *          Message to send
+     * @param   translateColors
+     *          Whether color codes should be translated or not
+     */
+    @Override
+    public void sendConsoleMessage(String message, boolean translateColors) {
+        Bukkit.getConsoleSender().sendMessage("[TAB] " + (translateColors ?
+                EnumChatFormat.color(RGBUtils.getInstance().convertToBukkitFormat(message,
+                        TAB.getInstance().getServerVersion().getMinorVersion() >= 16))
+                : message));
+    }
 }
@@ -1,33 +1,34 @@
 package me.neznamy.tab.platforms.bukkit;

-import java.util.*;
-
+import com.mojang.authlib.GameProfile;
 import com.mojang.authlib.properties.Property;
+import com.viaversion.viaversion.api.Via;
+import com.viaversion.viaversion.api.legacy.bossbar.BossColor;
+import com.viaversion.viaversion.api.legacy.bossbar.BossFlag;
+import com.viaversion.viaversion.api.legacy.bossbar.BossStyle;
+import io.netty.channel.Channel;
+import lombok.NonNull;
+import me.neznamy.tab.api.chat.rgb.RGBUtils;
+import me.neznamy.tab.api.protocol.PacketPlayOutBoss;
+import me.neznamy.tab.api.protocol.PacketPlayOutChat;
 import me.neznamy.tab.api.protocol.Skin;
-import me.neznamy.tab.api.util.Preconditions;
+import me.neznamy.tab.platforms.bukkit.nms.storage.NMSStorage;
+import me.neznamy.tab.shared.ITabPlayer;
+import me.neznamy.tab.shared.TAB;
 import org.bukkit.Bukkit;
 import org.bukkit.boss.BarColor;
 import org.bukkit.boss.BarFlag;
 import org.bukkit.boss.BarStyle;
 import org.bukkit.boss.BossBar;
+import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.metadata.MetadataValue;
 import org.bukkit.potion.PotionEffectType;

-import com.earth2me.essentials.Essentials;
-import com.mojang.authlib.GameProfile;
-import com.viaversion.viaversion.api.Via;
-import com.viaversion.viaversion.api.legacy.bossbar.BossColor;
-import com.viaversion.viaversion.api.legacy.bossbar.BossFlag;
-import com.viaversion.viaversion.api.legacy.bossbar.BossStyle;
-
-import io.netty.channel.Channel;
-import me.libraryaddict.disguise.DisguiseAPI;
-import me.neznamy.tab.api.chat.rgb.RGBUtils;
-import me.neznamy.tab.api.protocol.PacketPlayOutBoss;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
-import me.neznamy.tab.shared.ITabPlayer;
-import me.neznamy.tab.shared.TAB;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;

 /**
 * TabPlayer implementation for Bukkit platform
@@ -48,26 +49,24 @@ public class BukkitTabPlayer extends ITabPlayer {

    /**
     * Constructs new instance with given bukkit player and protocol version
-     * @param    p
-     *             bukkit player
-     * @param    protocolVersion
-     *             Player's protocol network id
+     *
+     * @param   p
+     *          bukkit player
+     * @param   protocolVersion
+     *          Player's protocol network id
     */
    public BukkitTabPlayer(Player p, int protocolVersion){
-        super(p, p.getUniqueId(), p.getName(), "N/A", p.getWorld().getName(), protocolVersion);
+        super(p, p.getUniqueId(), p.getName(), TAB.getInstance().getConfiguration().getServerName(), p.getWorld().getName(), protocolVersion, true);
        try {
            handle = NMSStorage.getInstance().getHandle.invoke(player);
            playerConnection = NMSStorage.getInstance().PLAYER_CONNECTION.get(handle);
-            if (NMSStorage.getInstance().CHANNEL != null)
-                channel = (Channel) NMSStorage.getInstance().CHANNEL.get(NMSStorage.getInstance().NETWORK_MANAGER.get(playerConnection));
        } catch (ReflectiveOperationException e) {
-            TAB.getInstance().getErrorManager().printError("Failed to get playerConnection or channel of " + p.getName(), e);
+            TAB.getInstance().getErrorManager().printError("Failed to get playerConnection of " + p.getName(), e);
        }
    }

    @Override
-    public boolean hasPermission(String permission) {
-        Preconditions.checkNotNull(permission, "permission");
+    public boolean hasPermission(@NonNull String permission) {
        long time = System.nanoTime();
        boolean value = getPlayer().hasPermission(permission);
        TAB.getInstance().getCPUManager().addMethodTime("hasPermission", System.nanoTime()-time);
@@ -96,6 +95,8 @@ public class BukkitTabPlayer extends ITabPlayer {
                } else {
                    handleVia((PacketPlayOutBoss) nmsPacket);
                }
+            } else if (nmsPacket instanceof PacketPlayOutChat) {
+                getPlayer().sendMessage(((PacketPlayOutChat) nmsPacket).getMessage().toLegacyText());
            } else {
                NMSStorage.getInstance().sendPacket.invoke(playerConnection, nmsPacket);
            }
@@ -109,8 +110,9 @@ public class BukkitTabPlayer extends ITabPlayer {
     * Handles PacketPlayOutBoss packet send request using Bukkit API,
     * since the API offers everything we need and makes us not need to
     * deal with NMS code at all.
-     * @param    packet
-     *             packet request to handle using Bukkit API
+     *
+     * @param   packet
+     *          packet request to handle using Bukkit API
     */
    private void handle(PacketPlayOutBoss packet) {
        BossBar bar = bossBars.get(packet.getId());
@@ -157,8 +159,9 @@ public class BukkitTabPlayer extends ITabPlayer {
    /**
     * Handles PacketPlayOutBoss packet request for 1.9+ clients on
     * 1.8 servers using ViaVersion API instead of using Wither.
-     * @param    packet
-     *             packet request to handle using ViaVersion API
+     *
+     * @param   packet
+     *          packet request to handle using ViaVersion API
     */
    private void handleVia(PacketPlayOutBoss packet) {
        com.viaversion.viaversion.api.legacy.bossbar.BossBar bar;
@@ -202,12 +205,13 @@ public class BukkitTabPlayer extends ITabPlayer {

    /**
     * Sets BossBar flag to requested target value.
-     * @param    bar
-     *             BossBar to set flag of
-     * @param    targetValue
-     *             Target value of the flag
-     * @param    flag
-     *             Flag to set value of
+     *
+     * @param   bar
+     *          BossBar to set flag of
+     * @param   targetValue
+     *          Target value of the flag
+     * @param   flag
+     *          Flag to set value of
     */
    private void processFlag(BossBar bar, boolean targetValue, BarFlag flag) {
        if (targetValue && !bar.hasFlag(flag)) bar.addFlag(flag);
@@ -216,12 +220,13 @@ public class BukkitTabPlayer extends ITabPlayer {

    /**
     * Sets BossBar flag to requested target value.
-     * @param    bar
-     *             BossBar to set flag of
-     * @param    targetValue
-     *             Target value of the flag
-     * @param    flag
-     *             Flag to set value of
+     *
+     * @param   bar
+     *          BossBar to set flag of
+     * @param   targetValue
+     *          Target value of the flag
+     * @param   flag
+     *          Flag to set value of
     */
    private void processFlagVia(com.viaversion.viaversion.api.legacy.bossbar.BossBar bar, boolean targetValue, BossFlag flag) {
        if (targetValue && !bar.hasFlag(flag)) bar.addFlag(flag);
@@ -237,8 +242,8 @@ public class BukkitTabPlayer extends ITabPlayer {
    public boolean isDisguised() {
        try {
            if (!((BukkitPlatform)TAB.getInstance().getPlatform()).isLibsDisguisesEnabled()) return false;
-            return DisguiseAPI.isDisguised(getPlayer());
-        } catch (LinkageError e) {
+            return (boolean) Class.forName("me.libraryaddict.disguise.DisguiseAPI").getMethod("isDisguised", Entity.class).invoke(null, getPlayer());
+        } catch (LinkageError | ReflectiveOperationException e) {
            //java.lang.NoClassDefFoundError: Could not initialize class me.libraryaddict.disguise.DisguiseAPI
            TAB.getInstance().getErrorManager().printError("Failed to check disguise status using LibsDisguises", e);
            ((BukkitPlatform)TAB.getInstance().getPlatform()).setLibsDisguisesEnabled(false);
@@ -246,7 +251,6 @@ public class BukkitTabPlayer extends ITabPlayer {
        }
    }

-    @SuppressWarnings("unchecked")
    @Override
    public Skin getSkin() {
        try {
@@ -272,10 +276,7 @@ public class BukkitTabPlayer extends ITabPlayer {

    @Override
    public boolean isVanished() {
-        Essentials essentials = ((BukkitPlatform)TAB.getInstance().getPlatform()).getEssentials();
-        if (essentials != null && essentials.getUser(getUniqueId()).isVanished()) return true;
-        List<MetadataValue> metadata = getPlayer().getMetadata("vanished");
-        return !metadata.isEmpty() && metadata.get(0).asBoolean();
+        return getPlayer().getMetadata("vanished").stream().anyMatch(MetadataValue::asBoolean);
    }

    @SuppressWarnings("deprecation")
@@ -283,4 +284,15 @@ public class BukkitTabPlayer extends ITabPlayer {
    public int getGamemode() {
        return getPlayer().getGameMode().getValue();
    }
+
+    @Override
+    public Channel getChannel() {
+        try {
+            if (NMSStorage.getInstance().CHANNEL != null)
+                return (Channel) NMSStorage.getInstance().CHANNEL.get(NMSStorage.getInstance().NETWORK_MANAGER.get(playerConnection));
+        } catch (IllegalAccessException e) {
+            TAB.getInstance().getErrorManager().printError("Failed to get channel of " + getName(), e);
+        }
+        return null;
+    }
 }
@@ -1,24 +1,25 @@
 package me.neznamy.tab.platforms.bukkit;

-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.logging.Level;
-
+import me.neznamy.tab.api.ProtocolVersion;
+import me.neznamy.tab.api.TabAPI;
+import me.neznamy.tab.api.TabConstants;
+import me.neznamy.tab.api.TabPlayer;
+import me.neznamy.tab.api.chat.EnumChatFormat;
+import me.neznamy.tab.api.util.SupplierWithException;
+import me.neznamy.tab.platforms.bukkit.nms.storage.*;
+import me.neznamy.tab.shared.TAB;
 import org.bstats.bukkit.Metrics;
 import org.bstats.charts.SimplePie;
 import org.bukkit.Bukkit;
 import org.bukkit.command.*;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.java.JavaPlugin;
-import me.neznamy.tab.api.ProtocolVersion;
-import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.api.chat.EnumChatFormat;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
-import me.neznamy.tab.shared.TAB;
-import me.neznamy.tab.shared.TabConstants;
 import org.jetbrains.annotations.NotNull;

+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 /**
 * Main class for Bukkit platform
 */
@@ -26,24 +27,25 @@ public class Main extends JavaPlugin {

    @Override
    public void onEnable(){
-        getLogger().info(EnumChatFormat.color("&7Server version: " + Bukkit.getBukkitVersion().split("-")[0] + " (" + Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3] + ")"));
+        String version = Bukkit.getBukkitVersion().split("-")[0];
+        String serverPackage = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
+        Bukkit.getConsoleSender().sendMessage(EnumChatFormat.color("[TAB] Server version: " + version + " (" + serverPackage + ")"));
        if (!isVersionSupported()){
            Bukkit.getPluginManager().disablePlugin(this);
            return;
        }
        BukkitPlatform platform = new BukkitPlatform(this);
-        TAB.setInstance(new TAB(platform, ProtocolVersion.fromFriendlyName(Bukkit.getBukkitVersion().split("-")[0]),
-                Bukkit.getBukkitVersion().split("-")[0] + " (" + Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3] + ")", getDataFolder(), getLogger()));
+        TAB.setInstance(new TAB(platform, ProtocolVersion.fromFriendlyName(version), version + " (" + serverPackage + ")", getDataFolder(), getLogger()));
        if (TAB.getInstance().getServerVersion() == ProtocolVersion.UNKNOWN_SERVER_VERSION) {
-            getLogger().info(EnumChatFormat.color("&cUnknown server version: " + Bukkit.getBukkitVersion() + "! Plugin may not work correctly."));
+            Bukkit.getConsoleSender().sendMessage(EnumChatFormat.color("&c[TAB] Unknown server version: " + Bukkit.getBukkitVersion() + "! Plugin may not work correctly."));
        }
        Bukkit.getPluginManager().registerEvents(new BukkitEventListener(platform), this);
        TAB.getInstance().load();
        Metrics metrics = new Metrics(this, 5304);
-        metrics.addCustomChart(new SimplePie("unlimited_nametag_mode_enabled", () -> TAB.getInstance().getFeatureManager().isFeatureEnabled(TabConstants.Feature.UNLIMITED_NAME_TAGS) ? "Yes" : "No"));
-        metrics.addCustomChart(new SimplePie("placeholderapi", () -> Bukkit.getPluginManager().isPluginEnabled("PlaceholderAPI") ? "Yes" : "No"));
-        metrics.addCustomChart(new SimplePie("permission_system", () -> TAB.getInstance().getGroupManager().getPlugin().getName()));
-        metrics.addCustomChart(new SimplePie("server_version", () -> "1." + TAB.getInstance().getServerVersion().getMinorVersion() + ".x"));
+        metrics.addCustomChart(new SimplePie(TabConstants.MetricsChart.UNLIMITED_NAME_TAG_MODE_ENABLED, () -> TAB.getInstance().getFeatureManager().isFeatureEnabled(TabConstants.Feature.UNLIMITED_NAME_TAGS) ? "Yes" : "No"));
+        metrics.addCustomChart(new SimplePie(TabConstants.MetricsChart.PLACEHOLDER_API, () -> Bukkit.getPluginManager().isPluginEnabled(TabConstants.Plugin.PLACEHOLDER_API) ? "Yes" : "No"));
+        metrics.addCustomChart(new SimplePie(TabConstants.MetricsChart.PERMISSION_SYSTEM, () -> TAB.getInstance().getGroupManager().getPlugin().getName()));
+        metrics.addCustomChart(new SimplePie(TabConstants.MetricsChart.SERVER_VERSION, () -> "1." + TAB.getInstance().getServerVersion().getMinorVersion() + ".x"));
        PluginCommand cmd = Bukkit.getPluginCommand("tab");
        if (cmd == null) return;
        TABCommand command = new TABCommand();
@@ -53,7 +55,7 @@ public class Main extends JavaPlugin {

    @Override
    public void onDisable() {
-        //null check due to L31 return making L34 not run
+        //null check due to compatibility check making instance not get set on unsupported versions
        if (TAB.getInstance() != null) TAB.getInstance().unload();
    }
    
@@ -61,42 +63,59 @@ public class Main extends JavaPlugin {
     * Initializes all used NMS classes, constructors, fields and methods.
     * Returns {@code true} if everything went successfully and version is marked as compatible,
     * {@code false} if anything went wrong or version is not marked as compatible.
-     * @return    {@code true} if server version is compatible, {@code false} if not
+     *
+     * @return  {@code true} if server version is compatible, {@code false} if not
     */
    private boolean isVersionSupported(){
        List<String> supportedVersions = Arrays.asList(
                "v1_5_R1", "v1_5_R2", "v1_5_R3", "v1_6_R1", "v1_6_R2", "v1_6_R3",
                "v1_7_R1", "v1_7_R2", "v1_7_R3", "v1_7_R4", "v1_8_R1", "v1_8_R2", "v1_8_R3",
                "v1_9_R1", "v1_9_R2", "v1_10_R1", "v1_11_R1", "v1_12_R1", "v1_13_R1", "v1_13_R2",
-                "v1_14_R1", "v1_15_R1", "v1_16_R1", "v1_16_R2", "v1_16_R3", "v1_17_R1", "v1_18_R1", "v1_18_R2");
+                "v1_14_R1", "v1_15_R1", "v1_16_R1", "v1_16_R2", "v1_16_R3", "v1_17_R1", "v1_18_R1",
+                "v1_18_R2", "v1_19_R1", "v1_19_R2");
        String serverPackage = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
        try {
            long time = System.currentTimeMillis();
-            NMSStorage.setInstance(new NMSStorage());
+            int minorVersion = Integer.parseInt(serverPackage.split("_")[1]);
+            NMSStorage.setInstance(getNMSLoader());
            if (supportedVersions.contains(serverPackage)) {
-                getLogger().info(EnumChatFormat.color("&7Loaded NMS hook in " + (System.currentTimeMillis()-time) + "ms"));
+                Bukkit.getConsoleSender().sendMessage(EnumChatFormat.color("[TAB] Loaded NMS hook in " + (System.currentTimeMillis()-time) + "ms"));
                return true;
            } else {
-                getLogger().info(EnumChatFormat.color("&cNo compatibility issue was found, but this plugin version does not claim to support your server package (" + serverPackage + "). This jar has only been tested on 1.5.x - 1.18.2. Disabling just to stay safe."));
+                Bukkit.getConsoleSender().sendMessage(EnumChatFormat.color("&c[TAB] No compatibility issue was found, but this plugin version does not claim to support your server package (" + serverPackage + "). This jar has only been tested on 1.5.2 - 1.19.3. Disabling just to stay safe."));
            }
-        } catch (Exception ex) {
+        } catch (IllegalStateException ex) {
            if (supportedVersions.contains(serverPackage)) {
-                getLogger().log(Level.SEVERE, EnumChatFormat.color("&cYour server version is marked as compatible, but a compatibility issue was found. Please report the error below (include your server version & fork too)"), ex);
+                Bukkit.getConsoleSender().sendMessage(EnumChatFormat.color("&c[TAB] Your server version is marked as compatible, but a compatibility issue was found. Please report this issue (include your server version & fork too)"));
            } else {
-                getLogger().info(EnumChatFormat.color("&cYour server version is completely unsupported. This plugin version only supports 1.5.x - 1.18.2. Disabling."));
+                Bukkit.getConsoleSender().sendMessage(EnumChatFormat.color("&c[TAB] Your server version is completely unsupported. This plugin version only supports 1.5.2 - 1.19.3. Disabling."));
            }
        }
        return false;
    }

+    private NMSStorage getNMSLoader() {
+        List<SupplierWithException<NMSStorage>> loaders = new ArrayList<>();
+        loaders.add(BukkitLegacyNMSStorage::new);
+        loaders.add(BukkitModernNMSStorage::new);
+        loaders.add(MojangModernNMSStorage::new);
+        loaders.add(ThermosNMSStorage::new);
+        for (SupplierWithException<NMSStorage> loader : loaders) {
+            try {
+                return loader.get();
+            } catch (Exception ignored){}
+        }
+        throw new IllegalStateException("Unsupported server version");
+    }
+
    /**
     * Command handler for /tab command
     */
-    public static class TABCommand implements CommandExecutor, TabCompleter {
+    private static class TABCommand implements CommandExecutor, TabCompleter {

        @Override
        public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, String[] args) {
-            if (TAB.getInstance().isDisabled()) {
+            if (TabAPI.getInstance().isPluginDisabled()) {
                for (String message : TAB.getInstance().getDisabledCommand().execute(args, sender.hasPermission(TabConstants.Permission.COMMAND_RELOAD), sender.hasPermission(TabConstants.Permission.COMMAND_ALL))) {
                    sender.sendMessage(EnumChatFormat.color(message));
                }
@@ -1,25 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.event;
-
-import org.bukkit.event.Event;
-import org.bukkit.event.HandlerList;
-
-/**
- * Bukkit event that is called each time TAB fully loads. This includes server startup, reload,
- * /tab reload and /plugman reload tab
- *
- * @deprecated for removal, use {@link me.neznamy.tab.api.event.plugin.TabLoadEvent}
- */
-@Deprecated
-public class TabLoadEvent extends Event {
-
-    private static final HandlerList handlers = new HandlerList();
-
-    @Override
-    public HandlerList getHandlers(){
-        return getHandlerList();
-    }
-    
-    public static HandlerList getHandlerList() {
-        return handlers;
-    }
-}
@@ -1,36 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.event;
-
-import org.bukkit.event.Event;
-import org.bukkit.event.HandlerList;
-
-import me.neznamy.tab.api.TabPlayer;
-
-/**
- * Bukkit event that is called when player is successfully loaded after joining. This also includes plugin reloading.
- *
- * @deprecated for removal, use {@link me.neznamy.tab.api.event.player.PlayerLoadEvent}
- */
-@Deprecated
-public class TabPlayerLoadEvent extends Event {
-
-    private static final HandlerList handlers = new HandlerList();
-
-    private final TabPlayer player;
-
-    public TabPlayerLoadEvent(TabPlayer player) {
-        this.player = player;
-    }
-
-    @Override
-    public HandlerList getHandlers(){
-        return getHandlerList();
-    }
-
-    public static HandlerList getHandlerList() {
-        return handlers;
-    }
-
-    public TabPlayer getPlayer() {
-        return player;
-    }
-}
@@ -2,9 +2,11 @@ package me.neznamy.tab.platforms.bukkit.features;

 import me.clip.placeholderapi.PlaceholderAPI;
 import me.clip.placeholderapi.expansion.PlaceholderExpansion;
+import me.neznamy.tab.api.TabAPI;
+import me.neznamy.tab.api.TabConstants;
+import me.neznamy.tab.api.TabFeature;
 import me.neznamy.tab.api.TabPlayer;
 import me.neznamy.tab.shared.TAB;
-import me.neznamy.tab.shared.TabConstants;
 import me.neznamy.tab.shared.features.TabExpansion;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
@@ -18,7 +20,7 @@ import java.util.WeakHashMap;
 */
 public class BukkitTabExpansion extends PlaceholderExpansion implements TabExpansion {

-    /** Map holding all placeholder values for all players */
+    /** Map holding all values for all players for easy and high-performance access */
    private final Map<TabPlayer, Map<String, String>> values = new WeakHashMap<>();

    @Override
@@ -26,11 +28,6 @@ public class BukkitTabExpansion extends PlaceholderExpansion implements TabExpan
        return true;
    }

-    @Override
-    public boolean canRegister(){
-        return true;
-    }
-
    @Override
    public @NotNull String getAuthor(){
        return "NEZNAMY";
@@ -48,48 +45,29 @@ public class BukkitTabExpansion extends PlaceholderExpansion implements TabExpan

    @Override
    public String onPlaceholderRequest(Player player, @NotNull String identifier){
-        if (player == null) return "";
-        TabPlayer p = TAB.getInstance().getPlayer(player.getUniqueId());
        if (identifier.startsWith("replace_")) {
-            String placeholder = "%" + identifier.substring(8) + "%";
-            String output = PlaceholderAPI.setPlaceholders(player, placeholder);
-            return TAB.getInstance().getPlaceholderManager().findReplacement(placeholder, output);
+            String text = "%" + identifier.substring(8) + "%";
+            String textBefore;
+            do {
+                textBefore = text;
+                for (String placeholder : TAB.getInstance().getPlaceholderManager().detectPlaceholders(text)) {
+                    text = text.replace(placeholder, TabAPI.getInstance().getPlaceholderManager().findReplacement(placeholder,
+                            PlaceholderAPI.setPlaceholders(player, placeholder)));
+                }
+            } while (!textBefore.equals(text));
+            return text;
        }
-        return values.computeIfAbsent(p, pl -> new HashMap<>()).get(identifier);
+        if (identifier.startsWith("placeholder_")) {
+            TabAPI.getInstance().getPlaceholderManager().addUsedPlaceholder("%" + identifier.substring(12) + "%", (TabFeature) TabAPI.getInstance().getPlaceholderManager());
+        }
+        if (player == null) return "<Player cannot be null>";
+        TabPlayer p = TabAPI.getInstance().getPlayer(player.getUniqueId());
+        if (p == null || !p.isLoaded()) return "<Player is not loaded>";
+        return values.get(p).get(identifier);
    }

    @Override
-    public void setScoreboardVisible(TabPlayer player, boolean visible) {
-        values.computeIfAbsent(player, p -> new HashMap<>()).put("scoreboard_visible", visible ? "Enabled" : "Disabled");
-    }
-
-    @Override
-    public void setScoreboardName(TabPlayer player, String name) {
-        values.computeIfAbsent(player, p -> new HashMap<>()).put("scoreboard_name", name);
-    }
-
-    @Override
-    public void setBossBarVisible(TabPlayer player, boolean visible) {
-        values.computeIfAbsent(player, p -> new HashMap<>()).put("bossbar_visible", visible ? "Enabled" : "Disabled");
-    }
-
-    @Override
-    public void setNameTagPreview(TabPlayer player, boolean previewing) {
-        values.computeIfAbsent(player, p -> new HashMap<>()).put("ntpreview", previewing ? "Enabled" : "Disabled");
-    }
-
-    @Override
-    public void setPlaceholderValue(TabPlayer player, String placeholder, String value) {
-        values.computeIfAbsent(player, p -> new HashMap<>()).put("placeholder_" + placeholder.substring(1, placeholder.length()-1), value);
-    }
-
-    @Override
-    public void setPropertyValue(TabPlayer player, String property, String value) {
-        values.computeIfAbsent(player, p -> new HashMap<>()).put(property, value);
-    }
-
-    @Override
-    public void setRawPropertyValue(TabPlayer player, String property, String value) {
-        values.computeIfAbsent(player, p -> new HashMap<>()).put(property + "_raw", value);
+    public void setValue(TabPlayer player, String key, String value) {
+        values.computeIfAbsent(player, p -> new HashMap<>()).put(key, value);
    }
 }
@@ -5,6 +5,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;

+import me.neznamy.tab.api.TabAPI;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -15,7 +16,7 @@ import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.plugin.java.JavaPlugin;

 import me.neznamy.tab.api.TabFeature;
-import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.api.TabConstants;
 import me.neznamy.tab.shared.TAB;

 /**
@@ -24,28 +25,26 @@ import me.neznamy.tab.shared.TAB;
@SuppressWarnings("deprecation")
 public class PerWorldPlayerList extends TabFeature implements Listener {

-    //plugin instance
-    private final JavaPlugin plugin;
-
-    //config options
-    private final boolean allowBypass = TAB.getInstance().getConfiguration().getConfig().getBoolean("per-world-playerlist.allow-bypass-permission", false);
-    private final List<String> ignoredWorlds = TAB.getInstance().getConfiguration().getConfig().getStringList("per-world-playerlist.ignore-effect-in-worlds", Arrays.asList("ignoredworld", "build"));
-    private final Map<String, List<String>> sharedWorlds = TAB.getInstance().getConfiguration().getConfig().getConfigurationSection("per-world-playerlist.shared-playerlist-world-groups");
+    /** Config options */
+    private final boolean allowBypass = TabAPI.getInstance().getConfig().getBoolean("per-world-playerlist.allow-bypass-permission", false);
+    private final List<String> ignoredWorlds = TabAPI.getInstance().getConfig().getStringList("per-world-playerlist.ignore-effect-in-worlds", Arrays.asList("ignoredworld", "build"));
+    private final Map<String, List<String>> sharedWorlds = TabAPI.getInstance().getConfig().getConfigurationSection("per-world-playerlist.shared-playerlist-world-groups");

    /**
     * Constructs new instance with given parameters and loads config options
-     * @param plugin - plugin instance
+     *
+     * @param   plugin
+     *          plugin instance
     */
    public PerWorldPlayerList(JavaPlugin plugin) {
        super("Per world PlayerList", null);
-        this.plugin = plugin;
-        TAB.getInstance().debug(String.format("Loaded PerWorldPlayerList feature with parameters allowBypass=%s, ignoredWorlds=%s, sharedWorlds=%s", allowBypass, ignoredWorlds, sharedWorlds));
        Bukkit.getPluginManager().registerEvents(this, plugin);
+        TabAPI.getInstance().debug(String.format("Loaded PerWorldPlayerList feature with parameters allowBypass=%s, ignoredWorlds=%s, sharedWorlds=%s", allowBypass, ignoredWorlds, sharedWorlds));
    }

    @Override
    public void load(){
-        Bukkit.getScheduler().runTask(plugin, () -> Bukkit.getOnlinePlayers().forEach(this::checkPlayer));
+        Bukkit.getOnlinePlayers().forEach(this::checkPlayer);
    }

    @Override
@@ -72,6 +71,14 @@ public class PerWorldPlayerList extends TabFeature implements Listener {
        TAB.getInstance().getCPUManager().addTime(getFeatureName(), TabConstants.CpuUsageCategory.WORLD_SWITCH, System.nanoTime()-time);
    }

+    /**
+     * Performs visibility check on the player. Shows players this player should see and does not,
+     * hides players the player should not see, shows the player to those who should see player and hides
+     * from those, who should not see.
+     *
+     * @param   p
+     *          Player to update
+     */
    private void checkPlayer(Player p) {
        for (Player all : Bukkit.getOnlinePlayers()){
            if (all == p) continue;
@@ -82,6 +89,14 @@ public class PerWorldPlayerList extends TabFeature implements Listener {
        }
    }

+    /**
+     * Returns {@code true} if viewer should see target player, {@code false} if not.
+     * @param   viewer
+     *          Player viewing the TabList
+     * @param   target
+     *          Target displayed in the TabList
+     * @return  {@code true} if viewer should see target, {@code false} if not.
+     */
    private boolean shouldSee(Player viewer, Player target) {
        if (target == viewer) return true;
        if ((allowBypass && viewer.hasPermission(TabConstants.Permission.PER_WORLD_PLAYERLIST_BYPASS)) || ignoredWorlds.contains(viewer.getWorld().getName())) return true;
@@ -1,13 +1,16 @@
 package me.neznamy.tab.platforms.bukkit.features;

-import java.util.*;
-
+import me.neznamy.tab.api.TabAPI;
 import me.neznamy.tab.api.TabFeature;
 import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
+import me.neznamy.tab.platforms.bukkit.nms.storage.NMSStorage;
 import me.neznamy.tab.platforms.bukkit.nms.datawatcher.DataWatcher;
 import me.neznamy.tab.platforms.bukkit.nms.datawatcher.DataWatcherItem;
-import me.neznamy.tab.shared.TAB;
+
+import java.util.ConcurrentModificationException;
+import java.util.List;
+import java.util.Optional;
+import java.util.WeakHashMap;

 /**
 * A feature to disable minecraft 1.9+ feature making tamed animals
@@ -19,13 +22,13 @@ import me.neznamy.tab.shared.TAB;
 */
 public class PetFix extends TabFeature {

-    //nms storage
+    /** NMS Storage reference for quick access */
    private final NMSStorage nms = NMSStorage.getInstance();

-    //DataWatcher position of pet owner field
+    /** DataWatcher position of pet owner field */
    private final int petOwnerPosition = getPetOwnerPosition();

-    //logger of last interacts to prevent feature not working on 1.16
+    /** Logger of last interacts to prevent feature not working on 1.16 */
    private final WeakHashMap<TabPlayer, Long> lastInteractFix = new WeakHashMap<>();

    /**
@@ -45,16 +48,17 @@ public class PetFix extends TabFeature {
     */
    public PetFix() {
        super("Pet name fix", null);
-        TAB.getInstance().debug("Loaded PetFix feature");
+        TabAPI.getInstance().debug("Loaded PetFix feature");
    }

    /**
     * Returns position of pet owner field based on server version
-     * @return position of pet owner field based on server version
+     *
+     * @return  position of pet owner field based on server version
     */
    private int getPetOwnerPosition() {
        if (nms.getMinorVersion() >= 17) {
-            //1.17.x, 1.18.x
+            //1.17.x, 1.18.x, 1.19.x
            return 18;
        } else if (nms.getMinorVersion() >= 15) {
            //1.15.x, 1.16.x
@@ -72,25 +76,31 @@ public class PetFix extends TabFeature {
    }

    /**
-     * Cancels a packet if previous one arrived with no delay to prevent double toggle on 1.16
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     * Cancels a packet if previous one arrived with no delay to prevent double toggle since 1.16
+     *
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    @Override
    public boolean onPacketReceive(TabPlayer sender, Object packet) throws ReflectiveOperationException {
-        if (nms.PacketPlayInUseEntity.isInstance(packet)) {
-            if (lastInteractFix.containsKey(sender) && (System.currentTimeMillis() - lastInteractFix.get(sender) < INTERACT_COOLDOWN)) {
+        if (nms.PacketPlayInUseEntity.isInstance(packet) && isInteract(nms.PacketPlayInUseEntity_ACTION.get(packet))) {
+            if (System.currentTimeMillis() - lastInteractFix.getOrDefault(sender, 0L) < INTERACT_COOLDOWN) {
                //last interact packet was sent right now, cancelling to prevent double-toggle due to this feature enabled
                return true;
            }
-            if (isInteract(nms.PacketPlayInUseEntity_ACTION.get(packet))) {
-                //this is the first packet, saving player so the next packet can be cancelled
-                lastInteractFix.put(sender, System.currentTimeMillis());
-            }
+            //this is the first packet, saving player so the next packet can be cancelled
+            lastInteractFix.put(sender, System.currentTimeMillis());
        }
        return false;
    }

+    /**
+     * Checks if the provided entity use action is INTERACT or not.
+     *
+     * @param   action
+     *          Action to check
+     * @return {@code true} if action is INTERACT, {@code false} if not.
+     */
    private boolean isInteract(Object action) {
        if (nms.getMinorVersion() >= 17) {
            return nms.PacketPlayInUseEntity$d.isInstance(action);
@@ -101,8 +111,9 @@ public class PetFix extends TabFeature {

    /**
     * Removes pet owner field from DataWatcher
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     *
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    @SuppressWarnings("unchecked")
    @Override
@@ -114,9 +125,17 @@ public class PetFix extends TabFeature {
            try {
                for (Object item : items) {
                    if (item == null) continue;
-                    if (nms.DataWatcherObject_SLOT.getInt(nms.DataWatcherItem_TYPE.get(item)) == petOwnerPosition) {
-                        Object value = nms.DataWatcherItem_VALUE.get(item);
-                        if (value instanceof java.util.Optional || value instanceof com.google.common.base.Optional) {
+                    int slot;
+                    Object value;
+                    if (nms.is1_19_3Plus()) {
+                        slot = nms.DataWatcher$DataValue_POSITION.getInt(item);
+                        value = nms.DataWatcher$DataValue_VALUE.get(item);
+                    } else {
+                        slot = nms.DataWatcherObject_SLOT.getInt(nms.DataWatcherItem_TYPE.get(item));
+                        value = nms.DataWatcherItem_VALUE.get(item);
+                    }
+                    if (slot == petOwnerPosition) {
+                        if (value instanceof Optional || value instanceof com.google.common.base.Optional) {
                            removedEntry = item;
                        }
                    }
@@ -130,7 +149,7 @@ public class PetFix extends TabFeature {
            //<1.15
            DataWatcher watcher = DataWatcher.fromNMS(nms.PacketPlayOutSpawnEntityLiving_DATAWATCHER.get(packet));
            DataWatcherItem petOwner = watcher.getItem(petOwnerPosition);
-            if (petOwner != null && (petOwner.getValue() instanceof java.util.Optional || petOwner.getValue() instanceof com.google.common.base.Optional)) {
+            if (petOwner != null && (petOwner.getValue() instanceof Optional || petOwner.getValue() instanceof com.google.common.base.Optional)) {
                watcher.removeValue(petOwnerPosition);
                nms.setField(packet, nms.PacketPlayOutSpawnEntityLiving_DATAWATCHER, watcher.toNMS());
            }
@@ -1,6 +1,5 @@
 package me.neznamy.tab.platforms.bukkit.features;

-import me.neznamy.tab.api.util.Preconditions;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
@@ -13,7 +12,7 @@ import org.bukkit.plugin.java.JavaPlugin;
 import me.neznamy.tab.api.TabPlayer;
 import me.neznamy.tab.api.bossbar.BossBar;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutEntityTeleport;
-import me.neznamy.tab.shared.TabConstants;
+import me.neznamy.tab.api.TabConstants;
 import me.neznamy.tab.shared.TAB;
 import me.neznamy.tab.shared.features.bossbar.BossBarManagerImpl;

@@ -22,15 +21,16 @@ import me.neznamy.tab.shared.features.bossbar.BossBarManagerImpl;
 */
 public class WitherBossBar extends BossBarManagerImpl implements Listener {

-    //distance of wither in blocks
+    /** Distance of the Wither in blocks */
    private static final int WITHER_DISTANCE = 60;
    
    /**
-     * Constructs a new instance of the class
-     * @param plugin - plugin instance
+     * Constructs a new instance of the class and registers events and task
+     *
+     * @param   plugin
+     *          plugin instance
     */
    public WitherBossBar(JavaPlugin plugin) {
-        Preconditions.checkNotNull(plugin, "plugin");
        Bukkit.getPluginManager().registerEvents(this, plugin);
        //when MC is on fullscreen, BossBar disappears after 1 second of not being seen
        //when in a small window, it's about 100ms
@@ -44,6 +44,9 @@ public class WitherBossBar extends BossBarManagerImpl implements Listener {
        teleport();
    }

+    /**
+     * Updates Wither's location for all online players
+     */
    private void teleport() {
        for (TabPlayer p : TAB.getInstance().getOnlinePlayers()) {
            if (p.getVersion().getMinorVersion() > 8) continue; //sending VV packets to those
@@ -1,108 +1,52 @@
 package me.neznamy.tab.platforms.bukkit.features.unlimitedtags;

-import java.util.UUID;
-
-import org.bukkit.Location;
-import org.bukkit.entity.Entity;
-import org.bukkit.entity.EntityType;
-import org.bukkit.entity.Player;
-import org.bukkit.entity.Pose;
-
-import me.neznamy.tab.api.ArmorStand;
-import me.neznamy.tab.api.Property;
+import me.neznamy.tab.api.TabAPI;
+import me.neznamy.tab.api.TabConstants;
 import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.api.chat.EnumChatFormat;
-import me.neznamy.tab.api.chat.IChatBaseComponent;
 import me.neznamy.tab.api.protocol.TabPacket;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutEntityDestroy;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutEntityMetadata;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutEntityTeleport;
 import me.neznamy.tab.platforms.bukkit.nms.PacketPlayOutSpawnEntityLiving;
 import me.neznamy.tab.platforms.bukkit.nms.datawatcher.DataWatcher;
-import me.neznamy.tab.shared.TabConstants;
-import me.neznamy.tab.shared.TAB;
+import me.neznamy.tab.shared.backend.features.unlimitedtags.BackendArmorStand;
+import me.neznamy.tab.shared.backend.features.unlimitedtags.BackendArmorStandManager;
+import me.neznamy.tab.shared.backend.features.unlimitedtags.BackendNameTagX;
+import org.bukkit.Location;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.EntityType;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.Pose;

 /**
- * A class representing an armor stand attached to a player (if the feature is enabled)
+ * A class representing an armor stand attached to a player
 */
-public class BukkitArmorStand implements ArmorStand {
+public class BukkitArmorStand extends BackendArmorStand {

-    //entity id counter to pick unique entity IDs
-    private static int idCounter = 2000000000;
-
-    //NameTag feature
-    private final BukkitNameTagX manager = (BukkitNameTagX) TAB.getInstance().getFeatureManager().getFeature(TabConstants.Feature.UNLIMITED_NAME_TAGS);
-
-    private final BukkitArmorStandManager asm;
-    
-    //owner of the armor stand
-    private final TabPlayer owner;
-
-    //instance of Bukkit player
+    /** Owner as a Bukkit player */
    private final Player player;

-    //offset in blocks, 0 for original height
-    private double yOffset;
+    /** Entity destroy packet */
+    protected TabPacket destroyPacket = new PacketPlayOutEntityDestroy(entityId);

-    //entity ID of this armor stand
-    private final int entityId = idCounter++;
-
-    //unique ID of this armor stand
-    private final UUID uuid = UUID.randomUUID();
-
-    //sneaking flag of armor stands
-    private boolean sneaking;
-
-    //armor stand visibility
-    private boolean visible;
-
-    //property dedicated to this armor stand
-    private final Property property;
-
-    //if offset is static or dynamic based on other armor stands
-    private final boolean staticOffset;
-
-    //entity destroy packet
-    private final PacketPlayOutEntityDestroy destroyPacket = new PacketPlayOutEntityDestroy(entityId);
-
-    public BukkitArmorStand(BukkitArmorStandManager asm, TabPlayer owner, String propertyName, double yOffset, boolean staticOffset) {
-        this.asm = asm;
-        this.owner = owner;
-        this.staticOffset = staticOffset;
+    /**
+     * Constructs new instance with given parameters.
+     *
+     * @param   asm
+     *          Armor stand manager which this armor stand belongs to
+     * @param   owner
+     *          Owner of the armor stand
+     * @param   propertyName
+     *          Name of refresh property to use
+     * @param   yOffset
+     *          Offset in blocks
+     * @param   staticOffset
+     *          {@code true} if offset is static, {@code false} if not
+     */
+    public BukkitArmorStand(BackendNameTagX feature, BackendArmorStandManager asm, TabPlayer owner, String propertyName, double yOffset, boolean staticOffset) {
+        super(feature, asm, owner, propertyName, yOffset, staticOffset);
        player = (Player) owner.getPlayer();
-        this.yOffset = yOffset;
-        this.property = owner.getProperty(propertyName);
-        visible = getVisibility();
-    }
-
-    @Override
-    public void refresh() {
-        visible = getVisibility();
-        updateMetadata();
-    }
-
-    @Override
-    public Property getProperty() {
-        return property;
-    }
-
-    @Override
-    public boolean hasStaticOffset() {
-        return staticOffset;
-    }
-
-    @Override
-    public double getOffset() {
-        return yOffset;
-    }
-
-    @Override
-    public void setOffset(double offset) {
-        if (yOffset == offset) return;
-        yOffset = offset;
-        for (TabPlayer all : asm.getNearbyPlayers()) {
-            all.sendCustomPacket(getTeleportPacket(all), TabConstants.PacketCategory.UNLIMITED_NAMETAGS_OFFSET_CHANGE);
-        }
+        sneaking = player.isSneaking();
    }

    @Override
@@ -112,223 +56,100 @@ public class BukkitArmorStand implements ArmorStand {
        }
    }

-    @Override
-    public void destroy() {
-        for (TabPlayer all : asm.getNearbyPlayers()) all.sendCustomPacket(destroyPacket, TabConstants.PacketCategory.UNLIMITED_NAMETAGS_DESPAWN);
-    }
-    
    @Override
    public void destroy(TabPlayer viewer) {
        viewer.sendCustomPacket(destroyPacket, TabConstants.PacketCategory.UNLIMITED_NAMETAGS_DESPAWN);
    }

-    @Override
-    public void teleport() {
-        for (TabPlayer all : asm.getNearbyPlayers()) {
-            all.sendCustomPacket(getTeleportPacket(all), TabConstants.PacketCategory.UNLIMITED_NAMETAGS_TELEPORT);
-        }
-    }
-
-    @Override
-    public void teleport(TabPlayer viewer) {
-        if (!asm.isNearby(viewer) && viewer != owner) {
-            asm.spawn(viewer);
-        } else {
-            viewer.sendCustomPacket(getTeleportPacket(viewer), TabConstants.PacketCategory.UNLIMITED_NAMETAGS_TELEPORT);
-        }
-    }
-
-    @Override
-    public void sneak(boolean sneaking) {
-        if (this.sneaking == sneaking) return; //idk
-        this.sneaking = sneaking;
-        for (TabPlayer viewer : asm.getNearbyPlayers()) {
-            if (viewer.getVersion().getMinorVersion() == 14 && !manager.isArmorStandsAlwaysVisible()) {
-                //1.14.x client sided bug, de-spawning completely
-                if (sneaking) {
-                    viewer.sendCustomPacket(destroyPacket, TabConstants.PacketCategory.UNLIMITED_NAMETAGS_SNEAK);
-                } else {
-                    spawn(viewer);
-                }
-            } else {
-                //respawning so there's no animation and it's instant
-                respawn(viewer);
-            }
-        }
-    }
-
-    @Override
-    public void updateVisibility(boolean force) {
-        boolean visibility = getVisibility();
-        if (visible != visibility || force) {
-            refresh();
-        }
-    }
-
-    @Override
-    public int getEntityId() {
-        return entityId;
-    }
-
    /**
-     * Returns teleport packet for specified viewer
-     * @param viewer - player to get location for
-     * @return teleport packet
+     * Returns location where armor stand should be at time of calling.
+     * This takes into account everything that affects height, including
+     * viewer's game version.
+     *
+     * @param   viewer
+     *          Player looking at the armor stand
+     * @return  Location where armor stand should be for specified viewer
     */
-    public PacketPlayOutEntityTeleport getTeleportPacket(TabPlayer viewer) {
-        return new PacketPlayOutEntityTeleport(entityId, getArmorStandLocationFor(viewer));
-    }
+    public Location getLocation(TabPlayer viewer) {
+        Location loc = player.getLocation();
+        double y = loc.getY();

-    /**
-     * Updates armor stand's metadata
-     */
-    public void updateMetadata() {
-        for (TabPlayer viewer : asm.getNearbyPlayers()) {
-            viewer.sendCustomPacket(new PacketPlayOutEntityMetadata(entityId, createDataWatcher(property.getFormat(viewer), viewer)), TabConstants.PacketCategory.UNLIMITED_NAMETAGS_METADATA);
-        }
-    }
-
-    /**
-     * Returns general visibility rule for everyone with limited info
-     * @return true if armor stand should be visible, false if not
-     */
-    public boolean getVisibility() {
-        if (manager.isArmorStandsAlwaysVisible()) return true;
-        if (owner.isDisguised() || manager.getVehicleManager().isOnBoat(owner)) return false;
-        return !owner.hasInvisibilityPotion() && owner.getGamemode() != 3 && !manager.hasHiddenNametag(owner) && property.get().length() > 0;
-    }
-
-    /**
-     * Returns general location where armor stand should be at time of calling
-     * @return Location where armor stand should be for everyone
-     */
-    public Location getLocation() {
-        double x = player.getLocation().getX();
-        double y = getY() + yOffset + 2;
-        double z = player.getLocation().getZ();
-        if (player.isSleeping()) {
-            y -= 1.76;
-        } else {
-            if (TAB.getInstance().getServerVersion().getMinorVersion() >= 9) {
-                y -= (sneaking ? 0.45 : 0.18);
-            } else {
-                y -= (sneaking ? 0.30 : 0.18);
-            }
-        }
-        return new Location(null,x,y,z);
-    }
-
-    /**
-     * Returns Y where player is based on player's vehicle due to bukkit API bug
-     * @return correct player's Y
-     */
-    protected double getY() {
        //1.14+ server sided bug
        Entity vehicle = player.getVehicle();
        if (vehicle != null) {
            if (vehicle.getType().toString().contains("HORSE")) { //covering all 3 horse types
-                return vehicle.getLocation().getY() + 0.85;
+                y = vehicle.getLocation().getY() + 0.85;
            }
            if (vehicle.getType().toString().equals("DONKEY")) { //1.11+
-                return vehicle.getLocation().getY() + 0.525;
+                y = vehicle.getLocation().getY() + 0.525;
            }
            if (vehicle.getType() == EntityType.PIG) {
-                return vehicle.getLocation().getY() + 0.325;
+                y = vehicle.getLocation().getY() + 0.325;
            }
            if (vehicle.getType().toString().equals("STRIDER")) { //1.16+
-                return vehicle.getLocation().getY() + 1.15;
+                y = vehicle.getLocation().getY() + 1.15;
+            }
+        } else {
+            //1.13+ swimming or 1.9+ flying with elytra
+            if (isSwimming() || (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 9 && player.isGliding())) {
+                y = loc.getY()-1.22;
            }
        }
-        //1.13+ swimming or 1.9+ flying with elytra
-        if (isSwimming() || (TAB.getInstance().getServerVersion().getMinorVersion() >= 9 && player.isGliding())) {
-            return player.getLocation().getY()-1.22;
-        }
-        return player.getLocation().getY();
+        y += getYAdd(player.isSleeping(), sneaking, viewer);
+        return new Location(null, loc.getX(), y, loc.getZ());
    }

+    @Override
+    public void updateMetadata(TabPlayer viewer) {
+        viewer.sendCustomPacket(new PacketPlayOutEntityMetadata(entityId, createDataWatcher(property.getFormat(viewer), viewer)), TabConstants.PacketCategory.UNLIMITED_NAMETAGS_METADATA);
+    }
+
+    @Override
+    public void sendTeleportPacket(TabPlayer viewer) {
+        viewer.sendCustomPacket(new PacketPlayOutEntityTeleport(entityId, getLocation(viewer)),
+                TabConstants.PacketCategory.UNLIMITED_NAMETAGS_TELEPORT);
+    }
+
+    /**
+     * Returns {@code true} if owner is swimming, {@code false} if not
+     * @return  {@code true} if owner is swimming, {@code false} if not
+     */
    private boolean isSwimming() {
-        if (TAB.getInstance().getServerVersion().getMinorVersion() >= 14 && player.getPose() == Pose.SWIMMING) return true;
-        return TAB.getInstance().getServerVersion().getMinorVersion() == 13 && player.isSwimming();
+        if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 14 && player.getPose() == Pose.SWIMMING) return true;
+        return TabAPI.getInstance().getServerVersion().getMinorVersion() == 13 && player.isSwimming();
    }

-    /**
-     * Creates data watcher with specified display name for viewer
-     * @param displayName - armor stand name
-     * @param viewer - player to apply checks against
-     * @return DataWatcher for viewer
-     */
-    public DataWatcher createDataWatcher(String displayName, TabPlayer viewer) {
-        DataWatcher datawatcher = new DataWatcher();
-
-        byte flag = 32; //invisible
-        if (sneaking) flag += (byte)2;
-        datawatcher.helper().setEntityFlags(flag);
-        datawatcher.helper().setCustomName(displayName, viewer.getVersion());
-
-        boolean visibility;
-        if (isNameVisiblyEmpty(displayName) || !((Player) viewer.getPlayer()).canSee(player) ||
-                manager.hasHiddenNametag(owner, viewer) || manager.hasHiddenNameTagVisibilityView(viewer)) {
-            visibility = false;
-        } else {
-            visibility = visible;
-        }
-        datawatcher.helper().setCustomNameVisible(visibility);
-
-        if (viewer.getVersion().getMinorVersion() > 8 || manager.isMarkerFor18x()) datawatcher.helper().setArmorStandFlags((byte)16);
-        return datawatcher;
-    }
-
-    /**
-     * Returns true if display name is in fact empty, for example only containing color codes
-     * @param displayName - string to check
-     * @return true if it's empty, false if not
-     */
-    private boolean isNameVisiblyEmpty(String displayName) {
-        if (displayName.length() == 0) return true;
-        if (!displayName.startsWith(EnumChatFormat.COLOR_STRING) && !displayName.startsWith("&") && !displayName.startsWith("#")) return false;
-        String text = IChatBaseComponent.fromColoredText(displayName).toRawText();
-        if (text.contains(" ")) text = text.replace(" ", "");
-        return text.length() == 0;
-    }
-
-    /**
-     * Returns list of packets to send to make armor stand spawn with metadata
-     * @param viewer - viewer to apply relational placeholders for
-     * @return List of packets that spawn the armor stand
-     */
-    public TabPacket[] getSpawnPackets(TabPlayer viewer) {
-        visible = getVisibility();
+    private TabPacket[] getSpawnPackets(TabPlayer viewer) {
+        visible = calculateVisibility();
        DataWatcher dataWatcher = createDataWatcher(property.getFormat(viewer), viewer);
-        if (TAB.getInstance().getServerVersion().getMinorVersion() >= 15) {
+        if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 15) {
            return new TabPacket[] {
-                    new PacketPlayOutSpawnEntityLiving(entityId, uuid, EntityType.ARMOR_STAND, getArmorStandLocationFor(viewer), null),
+                    new PacketPlayOutSpawnEntityLiving(entityId, uuid, EntityType.ARMOR_STAND, getLocation(viewer), null),
                    new PacketPlayOutEntityMetadata(entityId, dataWatcher)
            };
        } else {
            return new TabPacket[] {
-                    new PacketPlayOutSpawnEntityLiving(entityId, uuid, EntityType.ARMOR_STAND, getArmorStandLocationFor(viewer), dataWatcher),
+                    new PacketPlayOutSpawnEntityLiving(entityId, uuid, EntityType.ARMOR_STAND, getLocation(viewer), dataWatcher),
            };
        }
    }

    /**
-     * Returns location where armor stand should be for specified viewer
-     * @param viewer - player to get location for
-     * @return location of armor stand
+     * Creates data watcher with specified display name for viewer
+     *
+     * @param   displayName
+     *          armor stand name
+     * @param   viewer
+     *          player to apply checks against
+     * @return  DataWatcher for viewer
     */
-    public Location getArmorStandLocationFor(TabPlayer viewer) {
-        return viewer.getVersion().getMinorVersion() == 8 && !manager.isMarkerFor18x() ? getLocation().clone().add(0,-2,0) : getLocation();
-    }
-
-    @Override
-    public void respawn(TabPlayer viewer) {
-        viewer.sendCustomPacket(destroyPacket, TabConstants.PacketCategory.UNLIMITED_NAMETAGS_DESPAWN);
-        Runnable spawn = () -> spawn(viewer);
-        if (viewer.getVersion().getMinorVersion() == 8) {
-            //1.8.0 client sided bug
-            TAB.getInstance().getCPUManager().runTaskLater(50, manager, TabConstants.CpuUsageCategory.V1_8_0_BUG_COMPENSATION, spawn);
-        } else {
-            spawn.run();
-        }
+    public DataWatcher createDataWatcher(String displayName, TabPlayer viewer) {
+        DataWatcher datawatcher = new DataWatcher();
+        datawatcher.getHelper().setEntityFlags((byte) (sneaking ? 34 : 32));
+        datawatcher.getHelper().setCustomName(displayName, viewer.getVersion());
+        datawatcher.getHelper().setCustomNameVisible(!shouldBeInvisibleFor(viewer, displayName) && visible);
+        if (viewer.getVersion().getMinorVersion() > 8 || manager.isMarkerFor18x())
+            datawatcher.getHelper().setArmorStandFlags((byte)16);
+        return datawatcher;
    }
 }
@@ -1,161 +1,152 @@
 package me.neznamy.tab.platforms.bukkit.features.unlimitedtags;

+import me.neznamy.tab.api.TabAPI;
+import me.neznamy.tab.api.TabConstants;
 import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.shared.TAB;
-import me.neznamy.tab.shared.TabConstants;
-import me.neznamy.tab.shared.features.nametags.unlimited.NameTagX;
+import me.neznamy.tab.platforms.bukkit.nms.storage.NMSStorage;
+import me.neznamy.tab.shared.backend.features.unlimitedtags.BackendArmorStand;
+import me.neznamy.tab.shared.backend.features.unlimitedtags.BackendArmorStandManager;
+import me.neznamy.tab.shared.backend.features.unlimitedtags.BackendNameTagX;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
+import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.event.HandlerList;
 import org.bukkit.plugin.java.JavaPlugin;

-/**
- * The core class for unlimited NameTag mode
- */
-public class BukkitNameTagX extends NameTagX {
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;

-    //bukkit event listener
+/**
+ * The core class for unlimited NameTag mode on Bukkit
+ */
+public class BukkitNameTagX extends BackendNameTagX {
+
+    /** Reference to NMS storage for quick access */
+    private final NMSStorage nms = NMSStorage.getInstance();
+
+    /** Bukkit event listener */
    private final EventListener eventListener = new EventListener(this);

-    private final VehicleRefresher vehicleManager = new VehicleRefresher(this);
-
    /**
-     * Constructs new instance with given parameters and loads config options
-     * @param plugin - plugin instance
+     * Constructs new instance with given parameter, loads config options, registers events
+     * and registers sub-features.
+     *
+     * @param   plugin
+     *          plugin instance
     */
    public BukkitNameTagX(JavaPlugin plugin) {
-        super(BukkitArmorStandManager::new);
        Bukkit.getPluginManager().registerEvents(eventListener, plugin);
-        TAB.getInstance().getFeatureManager().registerFeature(TabConstants.Feature.UNLIMITED_NAME_TAGS_PACKET_LISTENER, new PacketListener(this));
-        TAB.getInstance().getFeatureManager().registerFeature(TabConstants.Feature.UNLIMITED_NAME_TAGS_VEHICLE_REFRESHER, vehicleManager);
    }

    @Override
-    public void load() {
-        super.load();
-        for (TabPlayer all : TAB.getInstance().getOnlinePlayers()) {
-            if (isPlayerDisabled(all)) continue;
-            for (TabPlayer viewer : TAB.getInstance().getOnlinePlayers()) {
-                spawnArmorStands(viewer, all);
+    public boolean onPacketReceive(TabPlayer sender, Object packet) throws ReflectiveOperationException {
+        if (sender.getVersion().getMinorVersion() == 8 && nms.PacketPlayInUseEntity.isInstance(packet)) {
+            int entityId = nms.PacketPlayInUseEntity_ENTITY.getInt(packet);
+            TabPlayer attacked = null;
+            for (TabPlayer all : TabAPI.getInstance().getOnlinePlayers()) {
+                if (all.isLoaded() && getArmorStandManager(all).hasArmorStandWithID(entityId)) {
+                    attacked = all;
+                    break;
+                }
+            }
+            if (attacked != null && attacked != sender) {
+                nms.setField(packet, nms.PacketPlayInUseEntity_ENTITY, getEntityId(attacked));
            }
        }
-        startVisibilityRefreshTask();
+        return false;
    }

-    private void startVisibilityRefreshTask() {
-        TAB.getInstance().getCPUManager().startRepeatingMeasuredTask(500, this, TabConstants.CpuUsageCategory.REFRESHING_NAME_TAG_VISIBILITY, () -> {
-
-            for (TabPlayer p : TAB.getInstance().getOnlinePlayers()) {
-                if (isPlayerDisabled(p)) continue;
-                getArmorStandManager(p).updateVisibility(false);
+    @SuppressWarnings("unchecked")
+    @Override
+    public void onPacketSend(TabPlayer receiver, Object packet) throws ReflectiveOperationException {
+        if (receiver.getVersion().getMinorVersion() < 8) return;
+        if (!receiver.isLoaded() || isDisabledPlayer(receiver) || getDisabledUnlimitedPlayers().contains(receiver)) return;
+        if (nms.PacketPlayOutEntity.isInstance(packet) && !nms.PacketPlayOutEntityLook.isInstance(packet)) { //ignoring head rotation only packets
+            packetListener.onEntityMove(receiver, nms.PacketPlayOutEntity_ENTITYID.getInt(packet));
+        } else if (nms.PacketPlayOutEntityTeleport.isInstance(packet)) {
+            packetListener.onEntityMove(receiver, nms.PacketPlayOutEntityTeleport_ENTITYID.getInt(packet));
+        } else if (nms.PacketPlayOutNamedEntitySpawn.isInstance(packet)) {
+            packetListener.onEntitySpawn(receiver, nms.PacketPlayOutNamedEntitySpawn_ENTITYID.getInt(packet));
+        } else if (nms.PacketPlayOutEntityDestroy.isInstance(packet)) {
+            if (nms.getMinorVersion() >= 17) {
+                Object entities = nms.PacketPlayOutEntityDestroy_ENTITIES.get(packet);
+                if (entities instanceof List) {
+                    packetListener.onEntityDestroy(receiver, (List<Integer>) entities);
+                } else {
+                    //1.17.0
+                    packetListener.onEntityDestroy(receiver, (int) entities);
+                }
+            } else {
+                packetListener.onEntityDestroy(receiver, (int[]) nms.PacketPlayOutEntityDestroy_ENTITIES.get(packet));
            }
-        });
-    }
-
-    @Override
-    public void unload() {
-        super.unload();
-        HandlerList.unregisterAll(eventListener);
-    }
-
-    @Override
-    public void onJoin(TabPlayer connectedPlayer) {
-        super.onJoin(connectedPlayer);
-        if (isPlayerDisabled(connectedPlayer)) return;
-        for (TabPlayer viewer : TAB.getInstance().getOnlinePlayers()) {
-            spawnArmorStands(viewer, connectedPlayer);
-            spawnArmorStands(connectedPlayer, viewer);
        }
    }

    @Override
-    public boolean isOnBoat(TabPlayer player) {
-        return vehicleManager != null && vehicleManager.isOnBoat(player);
-    }
-
-    private void spawnArmorStands(TabPlayer viewer, TabPlayer target) {
-        if (target == viewer || isPlayerDisabled(target)) return;
-        if (((Player) viewer.getPlayer()).getWorld() != ((Player) target.getPlayer()).getWorld()) return;
-        if (getDistance(viewer, target) <= 48) {
-            if (((Player)viewer.getPlayer()).canSee((Player)target.getPlayer()) && !target.isVanished()) getArmorStandManager(target).spawn(viewer);
-        }
-    }
-
-    @Override
-    public void setNameTagPreview(TabPlayer player, boolean status) {
-        if (status) {
-            getArmorStandManager(player).spawn(player);
-        } else {
-            getArmorStandManager(player).destroy(player);
-        }
-    }
-
-    @Override
-    public void resumeArmorStands(TabPlayer player) {
-        if (isPlayerDisabled(player)) return;
-        for (TabPlayer viewer : TAB.getInstance().getOnlinePlayers()) {
-            spawnArmorStands(viewer, player);
-        }
-    }
-
-    @Override
-    public void pauseArmorStands(TabPlayer player) {
-        if (isPlayerDisabled(player)) return;
-        getArmorStandManager(player).destroy();
-    }
-
-    @Override
-    public void updateNameTagVisibilityView(TabPlayer player) {
-        for (TabPlayer all : TAB.getInstance().getOnlinePlayers()) {
-            getArmorStandManager(all).updateVisibility(true);
-        }
-    }
-
-    @Override
-    public void onQuit(TabPlayer disconnectedPlayer) {
-        super.onQuit(disconnectedPlayer);
-        for (TabPlayer all : TAB.getInstance().getOnlinePlayers()) {
-            getArmorStandManager(all).unregisterPlayer(disconnectedPlayer);
-        }
-        getArmorStandManager(disconnectedPlayer).destroy();
-        TAB.getInstance().getCPUManager().runTaskLater(500, this, TabConstants.CpuUsageCategory.PLAYER_QUIT, () -> getArmorStandManager(disconnectedPlayer).destroy());
-    }
-
-    @Override
-    public void onWorldChange(TabPlayer p, String from, String to) {
-        super.onWorldChange(p, from, to);
-        if (isUnlimitedDisabled(p.getServer(), to)) {
-            getDisabledUnlimitedPlayers().add(p);
-            updateTeamData(p);
-        } else if (getDisabledUnlimitedPlayers().remove(p)) {
-            updateTeamData(p);
-        }
-        if (isPreviewingNametag(p)) {
-            getArmorStandManager(p).spawn(p);
-        }
-    }
-
-    /**
-     * Returns flat distance between two players ignoring Y value
-     * @param player1 - first player
-     * @param player2 - second player
-     * @return flat distance in blocks
-     */
-    private double getDistance(TabPlayer player1, TabPlayer player2) {
+    public double getDistance(TabPlayer player1, TabPlayer player2) {
        Location loc1 = ((Player) player1.getPlayer()).getLocation();
        Location loc2 = ((Player) player2.getPlayer()).getLocation();
        return Math.sqrt(Math.pow(loc1.getX()-loc2.getX(), 2) + Math.pow(loc1.getZ()-loc2.getZ(), 2));
    }

    @Override
-    public BukkitArmorStandManager getArmorStandManager(TabPlayer player) {
-        return (BukkitArmorStandManager) armorStandManagerMap.get(player);
+    public boolean areInSameWorld(TabPlayer player1, TabPlayer player2) {
+        return ((Player) player1.getPlayer()).getWorld() == ((Player) player1.getPlayer()).getWorld();
    }

-    public VehicleRefresher getVehicleManager() {
-        return vehicleManager;
+    @Override
+    public boolean canSee(TabPlayer viewer, TabPlayer target) {
+        return ((Player)viewer.getPlayer()).canSee((Player)target.getPlayer());
    }

+    @Override
+    public void unregisterListener() {
+        HandlerList.unregisterAll(eventListener);
+    }

+    @SuppressWarnings("deprecation")
+    @Override
+    public List<Integer> getPassengers(Object entity) {
+        Entity vehicle = (Entity) entity;
+        if (TabAPI.getInstance().getServerVersion().getMinorVersion() >= 11) {
+            return vehicle.getPassengers().stream().map(Entity::getEntityId).collect(Collectors.toList());
+        } else {
+            if (vehicle.getPassenger() != null) {
+                return Collections.singletonList(vehicle.getPassenger().getEntityId());
+            } else {
+                return Collections.emptyList();
+            }
+        }
+    }
+
+    @Override
+    public void registerVehiclePlaceholder() {
+        TabAPI.getInstance().getPlaceholderManager().registerPlayerPlaceholder(TabConstants.Placeholder.VEHICLE, 100, p -> {
+            Entity v = ((Player)p.getPlayer()).getVehicle();
+            //There's a bug in Bukkit 1.19.3 throwing NPE on .toString(), use default toString implementation
+            return v == null ? "" : v.getClass().getName() + "@" + Integer.toHexString(v.hashCode());
+        });
+    }
+
+    @Override
+    public Object getVehicle(TabPlayer player) {
+        return ((Player)player.getPlayer()).getVehicle();
+    }
+
+    @Override
+    public int getEntityId(Object entity) {
+        return ((Entity)entity).getEntityId();
+    }
+
+    @Override
+    public String getEntityType(Object entity) {
+        return ((Entity)entity).getType().toString();
+    }
+
+    @Override
+    public BackendArmorStand createArmorStand(BackendArmorStandManager feature, TabPlayer owner, String lineName, double yOffset, boolean staticOffset) {
+        return new BukkitArmorStand(this, feature, owner, lineName, yOffset, staticOffset);
+    }
 }
@@ -1,50 +1,48 @@
 package me.neznamy.tab.platforms.bukkit.features.unlimitedtags;

+import lombok.RequiredArgsConstructor;
+import me.neznamy.tab.api.TabAPI;
+import me.neznamy.tab.api.TabConstants;
+import me.neznamy.tab.api.TabPlayer;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerRespawnEvent;
 import org.bukkit.event.player.PlayerToggleSneakEvent;

-import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.shared.TabConstants;
-import me.neznamy.tab.shared.TAB;
-
 /**
- * The event listener part for securing proper functionality of armor stands
+ * Class listening to Bukkit events which the feature requires and are
+ * sufficient, without packets being requires.
 */
+@RequiredArgsConstructor
 public class EventListener implements Listener {

-    //the NameTag feature handler
+    /** Reference to the main feature */
    private final BukkitNameTagX feature;

-    /**
-     * Constructs new instance with given parameters
-     * @param feature - NameTag feature handler
-     */
-    public EventListener(BukkitNameTagX feature) {
-        this.feature = feature;
-    }
-
    /**
     * Sneak event listener to de-spawn and spawn armor stands to skip animation
-     * @param e - sneak event
+     *
+     * @param   e
+     *          sneak event
     */
    @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
    public void onSneak(PlayerToggleSneakEvent e) {
-        TabPlayer p = TAB.getInstance().getPlayer(e.getPlayer().getUniqueId());
+        TabPlayer p = TabAPI.getInstance().getPlayer(e.getPlayer().getUniqueId());
        if (p == null || feature.isPlayerDisabled(p)) return;
-        TAB.getInstance().getCPUManager().runMeasuredTask(feature, TabConstants.CpuUsageCategory.PLAYER_SNEAK, () -> feature.getArmorStandManager(p).sneak(e.isSneaking()));
+        TabAPI.getInstance().getThreadManager().runMeasuredTask(feature, TabConstants.CpuUsageCategory.PLAYER_SNEAK, () -> feature.getArmorStandManager(p).sneak(e.isSneaking()));
    }

    /**
     * Respawning armor stands as respawn screen destroys all entities in client
-     * @param e - respawn event
+     *
+     * @param   e
+     *          respawn event
     */
    @EventHandler
    public void onRespawn(PlayerRespawnEvent e) {
-        TAB.getInstance().getCPUManager().runMeasuredTask(feature, TabConstants.CpuUsageCategory.PLAYER_RESPAWN, () -> {
-            TabPlayer respawned = TAB.getInstance().getPlayer(e.getPlayer().getUniqueId());
+        TabAPI.getInstance().getThreadManager().runMeasuredTask(feature, TabConstants.CpuUsageCategory.PLAYER_RESPAWN, () -> {
+            TabPlayer respawned = TabAPI.getInstance().getPlayer(e.getPlayer().getUniqueId());
            if (feature.isPlayerDisabled(respawned)) return;
            feature.getArmorStandManager(respawned).teleport();
        });
@@ -1,152 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.features.unlimitedtags;
-
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-
-import org.bukkit.entity.Entity;
-import org.bukkit.entity.Player;
-
-import me.neznamy.tab.api.TabFeature;
-import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
-import me.neznamy.tab.shared.TabConstants;
-import me.neznamy.tab.shared.TAB;
-
-/**
- * The packet listening part for securing proper functionality of armor stands
- * Bukkit events are too unreliable and delayed/ahead which causes de-sync
- */
-public class PacketListener extends TabFeature {
-
-    //main feature
-    private final BukkitNameTagX nameTagX;
-
-    //player data by entityId, used for better performance
-    private final Map<Integer, TabPlayer> entityIdMap = new ConcurrentHashMap<>();
-    
-    //nms storage
-    private final NMSStorage nms = NMSStorage.getInstance();
-
-    /**
-     * Constructs new instance with given parameters and loads config options
-     * @param nameTagX - main feature
-     */
-    public PacketListener(BukkitNameTagX nameTagX) {
-        super(nameTagX.getFeatureName(), null);
-        this.nameTagX = nameTagX;
-    }
-
-    @Override
-    public void load() {
-        for (TabPlayer all : TAB.getInstance().getOnlinePlayers()) {
-            entityIdMap.put(((Player) all.getPlayer()).getEntityId(), all);
-        }
-    }
-
-    @Override
-    public void onJoin(TabPlayer connectedPlayer) {
-        entityIdMap.put(((Player) connectedPlayer.getPlayer()).getEntityId(), connectedPlayer);
-    }
-
-    @Override
-    public void onQuit(TabPlayer disconnectedPlayer) {
-        entityIdMap.remove(((Player) disconnectedPlayer.getPlayer()).getEntityId());
-    }
-
-    @Override
-    public boolean onPacketReceive(TabPlayer sender, Object packet) throws ReflectiveOperationException {
-        if (sender.getVersion().getMinorVersion() == 8 && nms.PacketPlayInUseEntity.isInstance(packet)) {
-            int entityId = nms.PacketPlayInUseEntity_ENTITY.getInt(packet);
-            TabPlayer attacked = null;
-            for (TabPlayer all : TAB.getInstance().getOnlinePlayers()) {
-                if (all.isLoaded() && nameTagX.getArmorStandManager(all).hasArmorStandWithID(entityId)) {
-                    attacked = all;
-                    break;
-                }
-            }
-            if (attacked != null && attacked != sender) {
-                nms.setField(packet, nms.PacketPlayInUseEntity_ENTITY, ((Player) attacked.getPlayer()).getEntityId());
-            }
-        }
-        return false;
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    public void onPacketSend(TabPlayer receiver, Object packet) throws ReflectiveOperationException {
-        if (receiver.getVersion().getMinorVersion() < 8) return;
-        if (!receiver.isLoaded() || nameTagX.isDisabledPlayer(receiver) || nameTagX.getDisabledUnlimitedPlayers().contains(receiver)) return;
-        if (nms.PacketPlayOutEntity.isInstance(packet) && !nms.PacketPlayOutEntityLook.isInstance(packet)) { //ignoring head rotation only packets
-            onEntityMove(receiver, nms.PacketPlayOutEntity_ENTITYID.getInt(packet));
-        } else if (nms.PacketPlayOutEntityTeleport.isInstance(packet)) {
-            onEntityMove(receiver, nms.PacketPlayOutEntityTeleport_ENTITYID.getInt(packet));
-        } else if (nms.PacketPlayOutNamedEntitySpawn.isInstance(packet)) {
-            onEntitySpawn(receiver, nms.PacketPlayOutNamedEntitySpawn_ENTITYID.getInt(packet));
-        } else if (nms.PacketPlayOutEntityDestroy.isInstance(packet)) {
-            if (nms.getMinorVersion() >= 17) {
-                Object entities = nms.PacketPlayOutEntityDestroy_ENTITIES.get(packet);
-                if (entities instanceof List) {
-                    onEntityDestroy(receiver, (List<Integer>) entities);
-                } else {
-                    //1.17.0
-                    onEntityDestroy(receiver, (int) entities);
-                }
-            } else {
-                onEntityDestroy(receiver, (int[]) nms.PacketPlayOutEntityDestroy_ENTITIES.get(packet));
-            }
-        }
-    }
-
-    /**
-     * Processes entity move packet
-     * @param receiver - packet receiver
-     * @param entityId - entity that moved
-     */
-    private void onEntityMove(TabPlayer receiver, int entityId) {
-        TabPlayer pl = entityIdMap.get(entityId);
-        List<Entity> vehicleList;
-        if (pl != null) {
-            //player moved
-            if (nameTagX.isPlayerDisabled(pl)) return;
-            TAB.getInstance().getCPUManager().runMeasuredTask(nameTagX, TabConstants.CpuUsageCategory.PACKET_ENTITY_MOVE,
-                    () -> nameTagX.getArmorStandManager(pl).teleport(receiver));
-        } else if ((vehicleList = nameTagX.getVehicleManager().getVehicles().get(entityId)) != null){
-            //a vehicle carrying something moved
-            for (Entity entity : vehicleList) {
-                TabPlayer passenger = entityIdMap.get(entity.getEntityId());
-                if (passenger != null && nameTagX.getArmorStandManager(passenger) != null) {
-                    TAB.getInstance().getCPUManager().runMeasuredTask(nameTagX, TabConstants.CpuUsageCategory.PACKET_ENTITY_MOVE_PASSENGER,
-                            () -> nameTagX.getArmorStandManager(passenger).teleport(receiver));
-                }
-            }
-        }
-    }
-    
-    private void onEntitySpawn(TabPlayer receiver, int entityId) {
-        TabPlayer spawnedPlayer = entityIdMap.get(entityId);
-        if (spawnedPlayer != null && spawnedPlayer.isLoaded() && !nameTagX.isPlayerDisabled(spawnedPlayer)) {
-            TAB.getInstance().getCPUManager().runMeasuredTask(nameTagX, TabConstants.CpuUsageCategory.PACKET_ENTITY_SPAWN,
-                    () -> nameTagX.getArmorStandManager(spawnedPlayer).spawn(receiver));
-        }
-    }
-
-    private void onEntityDestroy(TabPlayer receiver, List<Integer> entities) {
-        for (int entity : entities) {
-            onEntityDestroy(receiver, entity);
-        }
-    }
-    
-    private void onEntityDestroy(TabPlayer receiver, int... entities) {
-        for (int entity : entities) {
-            onEntityDestroy(receiver, entity);
-        }
-    }
-    
-    private void onEntityDestroy(TabPlayer receiver, int entity) {
-        TabPlayer deSpawnedPlayer = entityIdMap.get(entity);
-        if (deSpawnedPlayer != null && deSpawnedPlayer.isLoaded() && !nameTagX.isPlayerDisabled(deSpawnedPlayer))
-            TAB.getInstance().getCPUManager().runMeasuredTask(nameTagX, TabConstants.CpuUsageCategory.PACKET_ENTITY_DESTROY,
-                    () -> nameTagX.getArmorStandManager(deSpawnedPlayer).destroy(receiver));
-    }
-}
@@ -1,136 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.features.unlimitedtags;
-
-import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
-
-import me.neznamy.tab.shared.TabConstants;
-import org.bukkit.entity.Entity;
-import org.bukkit.entity.EntityType;
-import org.bukkit.entity.Player;
-
-import me.neznamy.tab.api.TabFeature;
-import me.neznamy.tab.api.TabPlayer;
-import me.neznamy.tab.shared.TAB;
-
-public class VehicleRefresher extends TabFeature {
-
-    //map of players currently in a vehicle
-    private final WeakHashMap<TabPlayer, Entity> playersInVehicle = new WeakHashMap<>();
-    
-    //map of vehicles carrying players
-    private final Map<Integer, List<Entity>> vehicles = new ConcurrentHashMap<>();
-    
-    //set of players currently on boats
-    private final Set<TabPlayer> playersOnBoats = Collections.newSetFromMap(new WeakHashMap<>());
-    
-    private final BukkitNameTagX feature;
-        
-    public VehicleRefresher(BukkitNameTagX feature) {
-        super(feature.getFeatureName(), "Refreshing vehicles");
-        this.feature = feature;
-        TAB.getInstance().getCPUManager().startRepeatingMeasuredTask(50,
-                this, TabConstants.CpuUsageCategory.PROCESSING_PLAYER_MOVEMENT, () -> {
-                    for (TabPlayer inVehicle : playersInVehicle.keySet()) {
-                        feature.getArmorStandManager(inVehicle).teleport();
-//                        feature.getVehicleManager().processPassengers((Entity) inVehicle.getPlayer());
-                    }
-                    for (TabPlayer p : TAB.getInstance().getOnlinePlayers()) {
-                        if (feature.isPreviewingNametag(p)) {
-                            feature.getArmorStandManager(p).teleport(p);
-                        }
-                    }
-        });
-        addUsedPlaceholders(Collections.singletonList("%vehicle%"));
-        TAB.getInstance().getPlaceholderManager().registerPlayerPlaceholder("%vehicle%", 100, p -> ((Player)p.getPlayer()).getVehicle() == null ? "" : ((Player)p.getPlayer()).getVehicle());
-    }
-
-    @Override
-    public void load() {
-        for (TabPlayer p : TAB.getInstance().getOnlinePlayers()) {
-            Entity vehicle = ((Player)p.getPlayer()).getVehicle();
-            if (vehicle != null) {
-                vehicles.put(vehicle.getEntityId(), getPassengers(vehicle));
-                playersInVehicle.put(p, vehicle);
-                if (feature.isDisableOnBoats() && vehicle.getType() == EntityType.BOAT) {
-                    playersOnBoats.add(p);
-                }
-            }
-        }
-    }
-
-    @Override
-    public void onJoin(TabPlayer connectedPlayer) {
-        Entity vehicle = ((Entity) connectedPlayer.getPlayer()).getVehicle();
-        if (vehicle != null) vehicles.put(vehicle.getEntityId(), getPassengers(vehicle));
-    }
-
-    @Override
-    public void onQuit(TabPlayer disconnectedPlayer) {
-        if (playersInVehicle.containsKey(disconnectedPlayer)) vehicles.remove(playersInVehicle.get(disconnectedPlayer).getEntityId());
-    }
-
-    @Override
-    public void refresh(TabPlayer p, boolean force) {
-        if (feature.isPlayerDisabled(p)) return;
-        Entity vehicle = ((Player)p.getPlayer()).getVehicle();
-        if (playersInVehicle.containsKey(p) && vehicle == null) {
-            //vehicle exit
-            vehicles.remove(playersInVehicle.get(p).getEntityId());
-            feature.getArmorStandManager(p).teleport();
-            playersInVehicle.remove(p);
-            if (feature.isDisableOnBoats() && playersOnBoats.contains(p)) {
-                playersOnBoats.remove(p);
-                feature.updateTeamData(p);
-            }
-        }
-        if (!playersInVehicle.containsKey(p) && vehicle != null) {
-            //vehicle enter
-            vehicles.put(vehicle.getEntityId(), getPassengers(vehicle));
-            feature.getArmorStandManager(p).respawn(); //making teleport instant instead of showing teleport animation
-            playersInVehicle.put(p, vehicle);
-            if (feature.isDisableOnBoats() && vehicle.getType() == EntityType.BOAT) {
-                playersOnBoats.add(p);
-                feature.updateTeamData(p);
-            }
-        }
-    }
-
-    public boolean isOnBoat(TabPlayer p) {
-        return playersOnBoats.contains(p);
-    }
-    
-    public Map<Integer, List<Entity>> getVehicles() {
-        return vehicles;
-    }
-    
-    /**
-     * Returns list of all passengers on specified vehicle
-     * @param vehicle - vehicle to check passengers of
-     * @return list of passengers
-     */
-    @SuppressWarnings("deprecation")
-    public List<Entity> getPassengers(Entity vehicle){
-        if (TAB.getInstance().getServerVersion().getMinorVersion() >= 11) {
-            return vehicle.getPassengers();
-        } else {
-            if (vehicle.getPassenger() != null) {
-                return Collections.singletonList(vehicle.getPassenger());
-            } else {
-                return new ArrayList<>();
-            }
-        }
-    }
-
-    /**
-     * Teleports armor stands of all passengers on specified vehicle
-     * @param vehicle - entity to check passengers of
-     */
-    public void processPassengers(Entity vehicle) {
-        for (Entity passenger : getPassengers(vehicle)) {
-            if (passenger instanceof Player) {
-                feature.getArmorStandManager(TAB.getInstance().getPlayer(passenger.getUniqueId())).teleport();
-            }
-            processPassengers(passenger);
-        }
-    }
-}
@@ -1,677 +0,0 @@
-package me.neznamy.tab.platforms.bukkit.nms;
-
-import java.lang.reflect.AccessibleObject;
-import java.lang.reflect.Array;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.List;
-import java.util.UUID;
-
-import org.bukkit.Bukkit;
-
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import com.mojang.authlib.GameProfile;
-
-import io.netty.channel.Channel;
-import me.neznamy.tab.api.ProtocolVersion;
-import me.neznamy.tab.platforms.bukkit.Main;
-import me.neznamy.tab.platforms.bukkit.nms.datawatcher.DataWatcherRegistry;
-import me.neznamy.tab.shared.TAB;
-
-@SuppressWarnings("rawtypes")
-public final class NMSStorage {
-
-    //instance of this class
-    private static NMSStorage instance;
-
-    //server package, such as "v1_16_R3"
-    private final String serverPackage = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
-
-    //server minor version such as "16"
-    private final int minorVersion = Integer.parseInt(serverPackage.split("_")[1]);
-
-    //another field due to fabric which uses 1.16 package on 1.17 server
-    private final ProtocolVersion serverVersion = ProtocolVersion.fromFriendlyName(Bukkit.getBukkitVersion().split("-")[0]);
-
-    //base
-    private final Class<?> Packet = getNMSClass("net.minecraft.network.protocol.Packet", "Packet");
-    public final Class<?> EnumChatFormat = getNMSClass("net.minecraft.EnumChatFormat", "EnumChatFormat");
-    public final Class<?> EntityPlayer = getNMSClass("net.minecraft.server.level.EntityPlayer", "EntityPlayer");
-    private final Class<?> Entity = getNMSClass("net.minecraft.world.entity.Entity", "Entity");
-    private final Class<?> EntityLiving = getNMSClass("net.minecraft.world.entity.EntityLiving", "EntityLiving");
-    private final Class<?> PlayerConnection = getNMSClass("net.minecraft.server.network.PlayerConnection", "PlayerConnection");
-    public Constructor<?> newEntityArmorStand;
-    public final Field PING = getField(EntityPlayer, "ping", "latency", "field_71138_i", "field_13967", "e");
-    public final Field PLAYER_CONNECTION = getFields(EntityPlayer, PlayerConnection).get(0);
-    public Field NETWORK_MANAGER;
-    public Field CHANNEL;
-    public final Method getHandle = Class.forName("org.bukkit.craftbukkit." + serverPackage + ".entity.CraftPlayer").getMethod("getHandle");
-    public final Method sendPacket = getMethods(PlayerConnection, void.class, Packet).get(0);
-    public Method getProfile;
-    public final Method World_getHandle = Class.forName("org.bukkit.craftbukkit." + serverPackage + ".CraftWorld").getMethod("getHandle");
-    public final Enum[] EnumChatFormat_values = getEnumValues(EnumChatFormat);
-
-    //chat
-    public Class<?> ChatComponentText;
-    public Class<?> ChatHoverable;
-    public Class<?> EnumClickAction;
-    private Class<?> IChatBaseComponent;
-    public Constructor<?> newChatComponentText;
-    public Constructor<?> newChatClickable;
-    public Constructor<?> newChatModifier;
-    public Constructor<?> newChatHoverable;
-    public Field ChatBaseComponent_extra;
-    public Field ChatBaseComponent_modifier;
-    public Field ChatComponentText_text;
-    public Field ChatClickable_action;
-    public Field ChatClickable_value;
-    public Field ChatModifier_bold;
-    public Field ChatModifier_italic;
-    public Field ChatModifier_underlined;
-    public Field ChatModifier_strikethrough;
-    public Field ChatModifier_obfuscated;
-    public Field ChatModifier_clickEvent;
-    public Field ChatModifier_hoverEvent;
-    public Field ChatHexColor_name;
-    public Field ChatHexColor_rgb;
-    public Field ChatModifier_color;
-    public Method ChatComponentText_addSibling;
-    public Method EnumHoverAction_a;
-    public Method ChatHoverable_getAction;
-    public Method ChatHexColor_ofInt;
-    public Method ChatHexColor_ofString;
-    public Method ChatHoverable_serialize;
-    public Method ChatHoverable_getValue;
-    public Method EnumHoverAction_fromJson;
-    public Method EnumHoverAction_fromLegacyComponent;
-
-    //PacketPlayOutChat
-    public Class<?> ChatMessageType;
-    public Constructor<?> newPacketPlayOutChat;
-    public Enum[] ChatMessageType_values;
-
-    //DataWatcher
-    private final Class<?> DataWatcher = getNMSClass("net.minecraft.network.syncher.DataWatcher", "DataWatcher");
-    private final Class<?> DataWatcherItem = getNMSClass("net.minecraft.network.syncher.DataWatcher$Item", "DataWatcher$Item", "DataWatcher$WatchableObject", "WatchableObject");
-    public Class<?> DataWatcherRegistry;
-    public final Constructor<?> newDataWatcher = DataWatcher.getConstructors()[0];
-    public Constructor<?> newDataWatcherObject;
-    public Field DataWatcherItem_TYPE;
-    public final Field DataWatcherItem_VALUE = getFields(DataWatcherItem, Object.class).get(0);
-    public Field DataWatcherObject_SLOT;
-    public Field DataWatcherObject_SERIALIZER;
-    public Method DataWatcher_REGISTER;
-    private DataWatcherRegistry registry;
-
-    //PacketPlayOutSpawnEntityLiving
-    public final Class<?> PacketPlayOutSpawnEntityLiving = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutSpawnEntityLiving", "PacketPlayOutSpawnEntityLiving", "Packet24MobSpawn");
-    public Constructor<?> newPacketPlayOutSpawnEntityLiving;
-    public final Field PacketPlayOutSpawnEntityLiving_ENTITYID = getFields(PacketPlayOutSpawnEntityLiving, int.class).get(0);
-    public final Field PacketPlayOutSpawnEntityLiving_ENTITYTYPE = getFields(PacketPlayOutSpawnEntityLiving, int.class).get(1);
-    public final Field PacketPlayOutSpawnEntityLiving_YAW = getFields(PacketPlayOutSpawnEntityLiving, byte.class).get(0);
-    public final Field PacketPlayOutSpawnEntityLiving_PITCH = getFields(PacketPlayOutSpawnEntityLiving, byte.class).get(0);
-    public Field PacketPlayOutSpawnEntityLiving_UUID;
-    public Field PacketPlayOutSpawnEntityLiving_X;
-    public Field PacketPlayOutSpawnEntityLiving_Y;
-    public Field PacketPlayOutSpawnEntityLiving_Z;
-    public Field PacketPlayOutSpawnEntityLiving_DATAWATCHER;
-
-    //PacketPlayOutEntityTeleport
-    public final Class<?> PacketPlayOutEntityTeleport = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutEntityTeleport", "PacketPlayOutEntityTeleport", "Packet34EntityTeleport");
-    public Constructor<?> newPacketPlayOutEntityTeleport;
-    public final Field PacketPlayOutEntityTeleport_ENTITYID = getFields(PacketPlayOutEntityTeleport, int.class).get(0);
-    public Field PacketPlayOutEntityTeleport_X;
-    public Field PacketPlayOutEntityTeleport_Y;
-    public Field PacketPlayOutEntityTeleport_Z;
-    public final Field PacketPlayOutEntityTeleport_YAW = getFields(PacketPlayOutEntityTeleport, byte.class).get(0);
-    public final Field PacketPlayOutEntityTeleport_PITCH = getFields(PacketPlayOutEntityTeleport, byte.class).get(1);
-
-    //PacketPlayOutPlayerListHeaderFooter
-    public Constructor<?> newPacketPlayOutPlayerListHeaderFooter;
-    public Field PacketPlayOutPlayerListHeaderFooter_HEADER;
-    public Field PacketPlayOutPlayerListHeaderFooter_FOOTER;
-
-    //other entity packets
-    public final Class<?> PacketPlayInUseEntity = getNMSClass("net.minecraft.network.protocol.game.PacketPlayInUseEntity", "PacketPlayInUseEntity", "Packet7UseEntity");
-    public Class<?> PacketPlayInUseEntity$d;
-    public Field PacketPlayInUseEntity_ENTITY;
-    public Field PacketPlayInUseEntity_ACTION;
-
-    public final Class<?> PacketPlayOutEntity = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutEntity", "PacketPlayOutEntity", "Packet30Entity");
-    public final Field PacketPlayOutEntity_ENTITYID = getFields(PacketPlayOutEntity, int.class).get(0);
-
-    public final Class<?> PacketPlayOutEntityDestroy = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutEntityDestroy", "PacketPlayOutEntityDestroy", "Packet29DestroyEntity");
-    public Constructor<?> newPacketPlayOutEntityDestroy;
-    public final Field PacketPlayOutEntityDestroy_ENTITIES = setAccessible(PacketPlayOutEntityDestroy.getDeclaredFields()[0]);
-
-    public final Class<?> PacketPlayOutEntityLook = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutEntity$PacketPlayOutEntityLook", "PacketPlayOutEntity$PacketPlayOutEntityLook", "PacketPlayOutEntityLook", "Packet32EntityLook");
-
-    public final Class<?> PacketPlayOutEntityMetadata = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutEntityMetadata", "PacketPlayOutEntityMetadata", "Packet40EntityMetadata");
-    public final Constructor<?> newPacketPlayOutEntityMetadata = PacketPlayOutEntityMetadata.getConstructor(int.class, DataWatcher, boolean.class);
-    public final Field PacketPlayOutEntityMetadata_LIST = getFields(PacketPlayOutEntityMetadata, List.class).get(0);
-
-    public final Class<?> PacketPlayOutNamedEntitySpawn = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutNamedEntitySpawn", "PacketPlayOutNamedEntitySpawn", "Packet20NamedEntitySpawn");
-    public final Field PacketPlayOutNamedEntitySpawn_ENTITYID = getFields(PacketPlayOutNamedEntitySpawn, int.class).get(0);
-
-    //PacketPlayOutPlayerInfo
-    public Class<?> PacketPlayOutPlayerInfo;
-    public Constructor<?> newPacketPlayOutPlayerInfo;
-    public Constructor<?> newPlayerInfoData;
-    public Field PacketPlayOutPlayerInfo_ACTION;
-    public Field PacketPlayOutPlayerInfo_PLAYERS;
-    public Method PlayerInfoData_getProfile;
-    public Method PlayerInfoData_getLatency;
-    public Method PlayerInfoData_getGamemode;
-    public Method PlayerInfoData_getDisplayName;
-    public Enum[] EnumPlayerInfoAction_values;
-    public Enum[] EnumGamemode_values;
-
-    //scoreboard objectives
-    public final Class<?> PacketPlayOutScoreboardDisplayObjective = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutScoreboardDisplayObjective", "PacketPlayOutScoreboardDisplayObjective", "Packet208SetScoreboardDisplayObjective");
-    public final Class<?> PacketPlayOutScoreboardObjective = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutScoreboardObjective", "PacketPlayOutScoreboardObjective", "Packet206SetScoreboardObjective");
-    private final Class<?> Scoreboard = getNMSClass("net.minecraft.world.scores.Scoreboard", "Scoreboard");
-    private final Class<?> PacketPlayOutScoreboardScore = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutScoreboardScore", "PacketPlayOutScoreboardScore", "Packet207SetScoreboardScore");
-    private final Class<?> ScoreboardObjective = getNMSClass("net.minecraft.world.scores.ScoreboardObjective", "ScoreboardObjective");
-    private final Class<?> ScoreboardScore = getNMSClass("net.minecraft.world.scores.ScoreboardScore", "ScoreboardScore");
-    private final Class<?> IScoreboardCriteria = getNMSClass("net.minecraft.world.scores.criteria.IScoreboardCriteria", "IScoreboardCriteria");
-    public Class<?> EnumScoreboardHealthDisplay;
-    public final Constructor<?> newScoreboardObjective = ScoreboardObjective.getConstructors()[0];
-    public final Constructor<?> newScoreboard = Scoreboard.getConstructor();
-    public final Constructor<?> newScoreboardScore = ScoreboardScore.getConstructor(Scoreboard, ScoreboardObjective, String.class);
-    public final Constructor<?> newPacketPlayOutScoreboardDisplayObjective = PacketPlayOutScoreboardDisplayObjective.getConstructor(int.class, ScoreboardObjective);
-    public Constructor<?> newPacketPlayOutScoreboardObjective;
-    public Constructor<?> newPacketPlayOutScoreboardScore_1_13;
-    public Constructor<?> newPacketPlayOutScoreboardScore_String;
-    public Constructor<?> newPacketPlayOutScoreboardScore;
-    public final Field PacketPlayOutScoreboardDisplayObjective_POSITION = getFields(PacketPlayOutScoreboardDisplayObjective, int.class).get(0);
-    public final Field PacketPlayOutScoreboardDisplayObjective_OBJECTIVENAME = getFields(PacketPlayOutScoreboardDisplayObjective, String.class).get(0);
-    public final Field PacketPlayOutScoreboardObjective_OBJECTIVENAME = getFields(PacketPlayOutScoreboardObjective, String.class).get(0);
-    public Field PacketPlayOutScoreboardObjective_METHOD;
-    public final Field IScoreboardCriteria_self = getFields(IScoreboardCriteria, IScoreboardCriteria).get(0);
-    public Field PacketPlayOutScoreboardObjective_RENDERTYPE;
-    public Field PacketPlayOutScoreboardObjective_DISPLAYNAME;
-    public final Method ScoreboardScore_setScore = getMethod(ScoreboardScore, new String[]{"setScore", "func_96647_c", "method_1128", "b"}, int.class);
-    public Enum[] EnumScoreboardHealthDisplay_values;
-    public Enum[] EnumScoreboardAction_values;
-
-    //PacketPlayOutScoreboardTeam
-    public Class<?> PacketPlayOutScoreboardTeam;
-    public Constructor<?> newScoreboardTeam;
-    public Constructor<?> newPacketPlayOutScoreboardTeam;
-    public Field PacketPlayOutScoreboardTeam_NAME;
-    public Field PacketPlayOutScoreboardTeam_PLAYERS;
-    public Method ScoreboardTeam_getPlayerNameSet;
-    public Method ScoreboardTeam_setNameTagVisibility;
-    public Method ScoreboardTeam_setCollisionRule;
-    public Method ScoreboardTeam_setPrefix;
-    public Method ScoreboardTeam_setSuffix;
-    public Method ScoreboardTeam_setColor;
-    public Method ScoreboardTeam_setAllowFriendlyFire;
-    public Method ScoreboardTeam_setCanSeeFriendlyInvisibles;
-    public Method PacketPlayOutScoreboardTeam_of;
-    public Method PacketPlayOutScoreboardTeam_ofBoolean;
-    public Method PacketPlayOutScoreboardTeam_ofString;
-    public Enum[] EnumNameTagVisibility_values;
-    public Enum[] EnumTeamPush_values;
-    public Enum[] PacketPlayOutScoreboardTeam_PlayerAction_values;
-
-    /**
-     * Creates new instance, initializes required NMS classes and fields
-     * @throws    ReflectiveOperationException
-     *             If any class, field or method fails to load
-     */
-    public NMSStorage() throws ReflectiveOperationException {
-        ProtocolVersion.UNKNOWN_SERVER_VERSION.setMinorVersion(minorVersion); //fixing compatibility with forks that set version field value to "Unknown"
-        Class<?> NetworkManager = getNMSClass("net.minecraft.network.NetworkManager", "NetworkManager");
-        if (minorVersion >= 7) {
-            NETWORK_MANAGER = getFields(PlayerConnection, NetworkManager).get(0);
-        }
-        if (minorVersion >= 8) {
-            CHANNEL = getFields(NetworkManager, Channel.class).get(0);
-            getProfile = getMethods(getNMSClass("net.minecraft.world.entity.player.EntityHuman", "EntityHuman"), GameProfile.class).get(0);
-            newEntityArmorStand = getNMSClass("net.minecraft.world.entity.decoration.EntityArmorStand", "EntityArmorStand")
-                    .getConstructor(getNMSClass("net.minecraft.world.level.World", "World"), double.class, double.class, double.class);
-        }
-        initializeChatComponents();
-        initializeChatPacket();
-        initializeDataWatcher();
-        initializeEntityPackets();
-        initializeHeaderFooterPacket();
-        initializePlayerInfoPacket();
-        initializeScoreboardPackets();
-        try {
-            initializeTeamPackets();
-        } catch (ClassNotFoundException e) {
-            Bukkit.getConsoleSender().sendMessage(me.neznamy.tab.api.chat.EnumChatFormat.color("&c[TAB] Failed to load PacketPlayOutScoreboardTeam"));
-            //fabric with missing team packet
-        }
-    }
-
-    /**
-     * Sets new instance
-     * @param instance - new instance
-     */
-    public static void setInstance(NMSStorage instance) {
-        NMSStorage.instance = instance;
-    }
-
-    /**
-     * Returns instance
-     * @return instance
-     */
-    public static NMSStorage getInstance() {
-        return instance;
-    }
-
-    private void initializeChatComponents() throws ReflectiveOperationException {
-        if (minorVersion < 7) return;
-        Class<?> ChatBaseComponent = getNMSClass("net.minecraft.network.chat.ChatBaseComponent", "ChatBaseComponent");
-        Class<?> ChatClickable = getNMSClass("net.minecraft.network.chat.ChatClickable", "ChatClickable");
-        ChatComponentText = getNMSClass("net.minecraft.network.chat.ChatComponentText", "ChatComponentText");
-        ChatHoverable = getNMSClass("net.minecraft.network.chat.ChatHoverable", "ChatHoverable");
-        Class<?> ChatModifier = getNMSClass("net.minecraft.network.chat.ChatModifier", "ChatModifier");
-        EnumClickAction = getNMSClass("net.minecraft.network.chat.ChatClickable$EnumClickAction", "ChatClickable$EnumClickAction", "EnumClickAction");
-        Class<?> EnumHoverAction = getNMSClass("net.minecraft.network.chat.ChatHoverable$EnumHoverAction", "ChatHoverable$EnumHoverAction", "EnumHoverAction");
-        IChatBaseComponent = getNMSClass("net.minecraft.network.chat.IChatBaseComponent", "IChatBaseComponent");
-        newChatComponentText = ChatComponentText.getConstructor(String.class);
-        newChatClickable = ChatClickable.getConstructor(EnumClickAction, String.class);
-        ChatBaseComponent_extra = getFields(ChatBaseComponent, List.class).get(0);
-        ChatBaseComponent_modifier = getFields(ChatBaseComponent, ChatModifier).get(0);
-        ChatComponentText_text = getFields(ChatComponentText, String.class).get(0);
-        ChatClickable_action = getFields(ChatClickable, EnumClickAction).get(0);
-        ChatClickable_value = getFields(ChatClickable, String.class).get(0);
-        List<Field> booleans = getFields(ChatModifier, Boolean.class);
-        ChatModifier_bold = booleans.get(0);
-        ChatModifier_italic = booleans.get(1);
-        ChatModifier_underlined = booleans.get(2);
-        ChatModifier_strikethrough = booleans.get(3);
-        ChatModifier_obfuscated = booleans.get(4);
-        ChatModifier_clickEvent = getFields(ChatModifier, ChatClickable).get(0);
-        ChatModifier_hoverEvent = getFields(ChatModifier, ChatHoverable).get(0);
-        ChatComponentText_addSibling = getMethod(ChatComponentText, new String[]{"addSibling", "a", "func_150257_a", "method_10852"}, IChatBaseComponent);
-        EnumHoverAction_a = getMethod(EnumHoverAction, new String[]{"a", "func_150684_a", "method_27670"}, String.class);
-        ChatHoverable_getAction = getMethods(ChatHoverable, EnumHoverAction).get(0);
-        if (minorVersion >= 16) {
-            Class<?> ChatHexColor = getNMSClass("net.minecraft.network.chat.ChatHexColor", "ChatHexColor");
-            Class<?> MinecraftKey = getNMSClass("net.minecraft.resources.MinecraftKey", "MinecraftKey");
-            newChatModifier = setAccessible(ChatModifier.getDeclaredConstructor(ChatHexColor, Boolean.class, Boolean.class, Boolean.class, Boolean.class, Boolean.class, ChatClickable, ChatHoverable, String.class, MinecraftKey));
-            newChatHoverable = ChatHoverable.getConstructor(EnumHoverAction, Object.class);
-            List<Field> list = getFields(ChatHexColor, String.class);
-            ChatHexColor_name = list.get(list.size()-1);
-            ChatHexColor_rgb = getFields(ChatHexColor, int.class).get(0);
-            ChatModifier_color = getFields(ChatModifier, ChatHexColor).get(0);
-            ChatHexColor_ofInt = getMethods(ChatHexColor, ChatHexColor, int.class).get(0);
-            ChatHexColor_ofString = getMethods(ChatHexColor, ChatHexColor, String.class).get(0);
-            ChatHoverable_serialize = getMethods(ChatHoverable, JsonObject.class).get(0);
-            ChatHoverable_getValue = getMethods(ChatHoverable, Object.class, EnumHoverAction).get(0);
-            EnumHoverAction_fromJson = getMethods(EnumHoverAction, ChatHoverable, JsonElement.class).get(0);
-            EnumHoverAction_fromLegacyComponent = getMethods(EnumHoverAction, ChatHoverable, IChatBaseComponent).get(0);
-        } else {
-            newChatModifier = ChatModifier.getConstructor();
-            newChatHoverable = ChatHoverable.getConstructor(EnumHoverAction, IChatBaseComponent);
-            ChatModifier_color = getFields(ChatModifier, EnumChatFormat).get(0);
-            ChatHoverable_getValue = getMethods(ChatHoverable, IChatBaseComponent).get(0);
-        }
-    }
-
-    private void initializeChatPacket() throws ReflectiveOperationException {
-        Class<?> PacketPlayOutChat = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutChat", "PacketPlayOutChat", "Packet3Chat");
-        if (minorVersion >= 12) {
-            ChatMessageType = getNMSClass("net.minecraft.network.chat.ChatMessageType", "ChatMessageType");
-            ChatMessageType_values = getEnumValues(ChatMessageType);
-        }
-        if (minorVersion >= 16) {
-            newPacketPlayOutChat = PacketPlayOutChat.getConstructor(IChatBaseComponent, ChatMessageType, UUID.class);
-        } else if (minorVersion >= 12) {
-            newPacketPlayOutChat = PacketPlayOutChat.getConstructor(IChatBaseComponent, ChatMessageType);
-        } else if (minorVersion >= 8) {
-            newPacketPlayOutChat = PacketPlayOutChat.getConstructor(IChatBaseComponent, byte.class);
-        } else if (minorVersion >= 7){
-            newPacketPlayOutChat = PacketPlayOutChat.getConstructor(IChatBaseComponent);
-        }
-    }
-
-    private void initializeDataWatcher() throws ReflectiveOperationException {
-        if (minorVersion >= 9) {
-            Class<?> DataWatcherObject = getNMSClass("net.minecraft.network.syncher.DataWatcherObject", "DataWatcherObject");
-            DataWatcherRegistry = getNMSClass("net.minecraft.network.syncher.DataWatcherRegistry", "DataWatcherRegistry");
-            Class<?> DataWatcherSerializer = getNMSClass("net.minecraft.network.syncher.DataWatcherSerializer", "DataWatcherSerializer");
-            newDataWatcherObject = DataWatcherObject.getConstructor(int.class, DataWatcherSerializer);
-            DataWatcherItem_TYPE = getFields(DataWatcherItem, DataWatcherObject).get(0);
-            DataWatcherObject_SLOT = getFields(DataWatcherObject, int.class).get(0);
-            DataWatcherObject_SERIALIZER = getFields(DataWatcherObject, DataWatcherSerializer).get(0);
-            DataWatcher_REGISTER = getMethod(DataWatcher, new String[]{"register", "method_12784", "a"}, DataWatcherObject, Object.class);
-        } else {
-            DataWatcherItem_TYPE = getFields(DataWatcherItem, int.class).get(1);
-            DataWatcher_REGISTER = getMethod(DataWatcher, new String[]{"a", "func_75682_a"}, int.class, Object.class);
-        }
-        registry = new DataWatcherRegistry(this);
-    }
-
-    private void initializeEntityPackets() throws ReflectiveOperationException {
-        if (minorVersion >= 17 || serverVersion.getMinorVersion() >= 17) {
-            newPacketPlayOutSpawnEntityLiving = PacketPlayOutSpawnEntityLiving.getConstructor(EntityLiving);
-            newPacketPlayOutEntityTeleport = PacketPlayOutEntityTeleport.getConstructor(Entity);
-        } else {
-            newPacketPlayOutSpawnEntityLiving = PacketPlayOutSpawnEntityLiving.getConstructor();
-            newPacketPlayOutEntityTeleport = PacketPlayOutEntityTeleport.getConstructor();
-        }
-        if (minorVersion >= 17) {
-            PacketPlayInUseEntity$d = Class.forName("net.minecraft.network.protocol.game.PacketPlayInUseEntity$d");
-        }
-        try {
-            newPacketPlayOutEntityDestroy = PacketPlayOutEntityDestroy.getConstructor(int[].class);
-        } catch (NoSuchMethodException e) {
-            //1.17.0
-            newPacketPlayOutEntityDestroy = PacketPlayOutEntityDestroy.getConstructor(int.class);
-        }
-        if (minorVersion >= 7) {
-            Class<?> EnumEntityUseAction = getNMSClass("net.minecraft.network.protocol.game.PacketPlayInUseEntity$EnumEntityUseAction", "PacketPlayInUseEntity$EnumEntityUseAction", "EnumEntityUseAction", "net.minecraft.class_2824$class_5906");
-            PacketPlayInUseEntity_ENTITY = getFields(PacketPlayInUseEntity, int.class).get(0);
-            PacketPlayInUseEntity_ACTION = getFields(PacketPlayInUseEntity, EnumEntityUseAction).get(0);
-        }
-        if (minorVersion >= 9) {
-            PacketPlayOutSpawnEntityLiving_UUID = getFields(PacketPlayOutSpawnEntityLiving, UUID.class).get(0);
-            PacketPlayOutSpawnEntityLiving_X = getFields(PacketPlayOutSpawnEntityLiving, double.class).get(0);
-            PacketPlayOutSpawnEntityLiving_Y = getFields(PacketPlayOutSpawnEntityLiving, double.class).get(1);
-            PacketPlayOutSpawnEntityLiving_Z = getFields(PacketPlayOutSpawnEntityLiving, double.class).get(2);
-            PacketPlayOutEntityTeleport_X = getFields(PacketPlayOutEntityTeleport, double.class).get(0);
-            PacketPlayOutEntityTeleport_Y = getFields(PacketPlayOutEntityTeleport, double.class).get(1);
-            PacketPlayOutEntityTeleport_Z = getFields(PacketPlayOutEntityTeleport, double.class).get(2);
-        } else {
-            PacketPlayOutSpawnEntityLiving_X = getFields(PacketPlayOutSpawnEntityLiving, int.class).get(2);
-            PacketPlayOutSpawnEntityLiving_Y = getFields(PacketPlayOutSpawnEntityLiving, int.class).get(3);
-            PacketPlayOutSpawnEntityLiving_Z = getFields(PacketPlayOutSpawnEntityLiving, int.class).get(4);
-            PacketPlayOutEntityTeleport_X = getFields(PacketPlayOutEntityTeleport, int.class).get(1);
-            PacketPlayOutEntityTeleport_Y = getFields(PacketPlayOutEntityTeleport, int.class).get(2);
-            PacketPlayOutEntityTeleport_Z = getFields(PacketPlayOutEntityTeleport, int.class).get(3);
-        }
-        if (minorVersion <= 14) {
-            PacketPlayOutSpawnEntityLiving_DATAWATCHER = getFields(PacketPlayOutSpawnEntityLiving, DataWatcher).get(0);
-        }
-    }
-
-    private void initializeHeaderFooterPacket() throws ReflectiveOperationException {
-        if (minorVersion < 8) return;
-        Class<?> PacketPlayOutPlayerListHeaderFooter = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutPlayerListHeaderFooter", "PacketPlayOutPlayerListHeaderFooter");
-        PacketPlayOutPlayerListHeaderFooter_HEADER = getFields(PacketPlayOutPlayerListHeaderFooter, IChatBaseComponent).get(0);
-        PacketPlayOutPlayerListHeaderFooter_FOOTER = getFields(PacketPlayOutPlayerListHeaderFooter, IChatBaseComponent).get(1);
-        if (minorVersion >= 17 || serverVersion.getMinorVersion() >= 17) {
-            newPacketPlayOutPlayerListHeaderFooter = PacketPlayOutPlayerListHeaderFooter.getConstructor(IChatBaseComponent, IChatBaseComponent);
-        } else {
-            newPacketPlayOutPlayerListHeaderFooter = PacketPlayOutPlayerListHeaderFooter.getConstructor();
-        }
-    }
-
-    private void initializePlayerInfoPacket() throws ReflectiveOperationException {
-        if (minorVersion < 8) return;
-        PacketPlayOutPlayerInfo = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutPlayerInfo", "PacketPlayOutPlayerInfo");
-        Class<?> EnumPlayerInfoAction = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutPlayerInfo$EnumPlayerInfoAction", "PacketPlayOutPlayerInfo$EnumPlayerInfoAction", "EnumPlayerInfoAction", "net.minecraft.class_2703$class_5893");
-        Class<?> PlayerInfoData = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutPlayerInfo$PlayerInfoData", "PacketPlayOutPlayerInfo$PlayerInfoData", "PlayerInfoData");
-        Class<?> EnumGamemode = getNMSClass("net.minecraft.world.level.EnumGamemode", "EnumGamemode", "WorldSettings$EnumGamemode");
-        newPacketPlayOutPlayerInfo = PacketPlayOutPlayerInfo.getConstructor(EnumPlayerInfoAction, Array.newInstance(EntityPlayer, 0).getClass());
-        newPlayerInfoData = PlayerInfoData.getConstructors()[0];
-        PacketPlayOutPlayerInfo_ACTION = getFields(PacketPlayOutPlayerInfo, EnumPlayerInfoAction).get(0);
-        PacketPlayOutPlayerInfo_PLAYERS = getFields(PacketPlayOutPlayerInfo, List.class).get(0);
-        PlayerInfoData_getProfile = getMethods(PlayerInfoData, GameProfile.class).get(0);
-        PlayerInfoData_getLatency = getMethods(PlayerInfoData, int.class).get(0);
-        PlayerInfoData_getGamemode = getMethods(PlayerInfoData, EnumGamemode).get(0);
-        PlayerInfoData_getDisplayName = getMethods(PlayerInfoData, IChatBaseComponent).get(0);
-        EnumPlayerInfoAction_values = getEnumValues(EnumPlayerInfoAction);
-        EnumGamemode_values = getEnumValues(EnumGamemode);
-    }
-
-    private void initializeScoreboardPackets() throws ReflectiveOperationException {
-        List<Field> list = getFields(PacketPlayOutScoreboardObjective, int.class);
-        PacketPlayOutScoreboardObjective_METHOD = list.get(list.size()-1);
-        Class<?> EnumScoreboardAction = null;
-        if (minorVersion >= 8) {
-            EnumScoreboardHealthDisplay = getNMSClass("net.minecraft.world.scores.criteria.IScoreboardCriteria$EnumScoreboardHealthDisplay", "IScoreboardCriteria$EnumScoreboardHealthDisplay", "EnumScoreboardHealthDisplay");
-            EnumScoreboardHealthDisplay_values = getEnumValues(EnumScoreboardHealthDisplay);
-            EnumScoreboardAction = getNMSClass("net.minecraft.server.ScoreboardServer$Action", "ScoreboardServer$Action", "PacketPlayOutScoreboardScore$EnumScoreboardAction", "EnumScoreboardAction");
-            EnumScoreboardAction_values = getEnumValues(EnumScoreboardAction);
-            PacketPlayOutScoreboardObjective_RENDERTYPE = getFields(PacketPlayOutScoreboardObjective, EnumScoreboardHealthDisplay).get(0);
-        }
-        if (minorVersion >= 13) {
-            newPacketPlayOutScoreboardObjective = PacketPlayOutScoreboardObjective.getConstructor(ScoreboardObjective, int.class);
-            newPacketPlayOutScoreboardScore_1_13 = PacketPlayOutScoreboardScore.getConstructor(EnumScoreboardAction, String.class, String.class, int.class);
-            PacketPlayOutScoreboardObjective_DISPLAYNAME = getFields(PacketPlayOutScoreboardObjective, IChatBaseComponent).get(0);
-        } else {
-            newPacketPlayOutScoreboardObjective = PacketPlayOutScoreboardObjective.getConstructor();
-            newPacketPlayOutScoreboardScore_String = PacketPlayOutScoreboardScore.getConstructor(String.class);
-            PacketPlayOutScoreboardObjective_DISPLAYNAME = getFields(PacketPlayOutScoreboardObjective, String.class).get(1);
-            if (minorVersion >= 8) {
-                newPacketPlayOutScoreboardScore = PacketPlayOutScoreboardScore.getConstructor(ScoreboardScore);
-            } else {
-                newPacketPlayOutScoreboardScore = PacketPlayOutScoreboardScore.getConstructor(ScoreboardScore, int.class);
-            }
-        }
-    }
-
-    private void initializeTeamPackets() throws ReflectiveOperationException {
-        PacketPlayOutScoreboardTeam = getNMSClass("net.minecraft.network.protocol.game.PacketPlayOutScoreboardTeam", "PacketPlayOutScoreboardTeam", "Packet209SetScoreboardTeam");
-        Class<?> ScoreboardTeam = getNMSClass("net.minecraft.world.scores.ScoreboardTeam", "ScoreboardTeam");
-        newScoreboardTeam = ScoreboardTeam.getConstructor(Scoreboard, String.class);
-        PacketPlayOutScoreboardTeam_NAME = getFields(PacketPlayOutScoreboardTeam, String.class).get(0);
-        PacketPlayOutScoreboardTeam_PLAYERS = getFields(PacketPlayOutScoreboardTeam, Collection.class).get(0);
-        ScoreboardTeam_getPlayerNameSet = getMethods(ScoreboardTeam, Collection.class).get(0);
-        ScoreboardTeam_setAllowFriendlyFire = getMethod(ScoreboardTeam, new String[]{"setAllowFriendlyFire", "a", "func_96660_a"}, boolean.class);
-        ScoreboardTeam_setCanSeeFriendlyInvisibles = getMethod(ScoreboardTeam, new String[]{"setCanSeeFriendlyInvisibles", "b", "func_98300_b"}, boolean.class);
-        if (minorVersion >= 8) {
-            Class<?> EnumNameTagVisibility = getNMSClass("net.minecraft.world.scores.ScoreboardTeamBase$EnumNameTagVisibility", "ScoreboardTeamBase$EnumNameTagVisibility", "EnumNameTagVisibility");
-            EnumNameTagVisibility_values = getEnumValues(EnumNameTagVisibility);
-            ScoreboardTeam_setNameTagVisibility = getMethod(ScoreboardTeam, new String[]{"setNameTagVisibility", "a", "method_1149"}, EnumNameTagVisibility);
-        }
-        if (minorVersion >= 9) {
-            Class<?> EnumTeamPush = getNMSClass("net.minecraft.world.scores.ScoreboardTeamBase$EnumTeamPush", "ScoreboardTeamBase$EnumTeamPush");
-            EnumTeamPush_values = getEnumValues(EnumTeamPush);
-            ScoreboardTeam_setCollisionRule = getMethods(ScoreboardTeam, void.class, EnumTeamPush).get(0);
-        }
-        if (minorVersion >= 13) {
-            ScoreboardTeam_setPrefix = getMethod(ScoreboardTeam, new String[]{"setPrefix", "method_1138", "b"}, IChatBaseComponent);
-            ScoreboardTeam_setSuffix = getMethod(ScoreboardTeam, new String[]{"setSuffix", "method_1139", "c"}, IChatBaseComponent);
-            ScoreboardTeam_setColor = getMethods(ScoreboardTeam, void.class, EnumChatFormat).get(0);
-        } else {
-            ScoreboardTeam_setPrefix = getMethod(ScoreboardTeam, new String[]{"setPrefix", "func_96666_b"}, String.class);
-            ScoreboardTeam_setSuffix = getMethod(ScoreboardTeam, new String[]{"setSuffix", "func_96662_c"}, String.class);
-        }
-        if (minorVersion >= 17 || serverVersion.getMinorVersion() >= 17) {
-            Class<?> PacketPlayOutScoreboardTeam_PlayerAction = Class.forName("net.minecraft.network.protocol.game.PacketPlayOutScoreboardTeam$a");
-            PacketPlayOutScoreboardTeam_of = getMethods(PacketPlayOutScoreboardTeam, PacketPlayOutScoreboardTeam, ScoreboardTeam).get(0);
-            PacketPlayOutScoreboardTeam_ofBoolean = getMethods(PacketPlayOutScoreboardTeam, PacketPlayOutScoreboardTeam, ScoreboardTeam, boolean.class).get(0);
-            PacketPlayOutScoreboardTeam_ofString = getMethods(PacketPlayOutScoreboardTeam, PacketPlayOutScoreboardTeam, ScoreboardTeam, String.class, PacketPlayOutScoreboardTeam_PlayerAction).get(0);
-            PacketPlayOutScoreboardTeam_PlayerAction_values = getEnumValues(PacketPlayOutScoreboardTeam_PlayerAction);
-        } else {
-            newPacketPlayOutScoreboardTeam = PacketPlayOutScoreboardTeam.getConstructor(ScoreboardTeam, int.class);
-        }
-    }
-
-    /**
-     * Returns class with given potential names in same order
-     * @param names - possible class names
-     * @return class for specified name(s)
-     * @throws ClassNotFoundException if class does not exist
-     */
-    private Class<?> getNMSClass(String fullPath_1_17, String... names) throws ClassNotFoundException {
-        if (minorVersion >= 17) {
-            return Class.forName(fullPath_1_17);
-        }
-        for (String name : names) {
-            try {
-                return getLegacyClass(name);
-            } catch (ClassNotFoundException e) {
-                //not the first class name in array
-            }
-        }
-        throw new ClassNotFoundException("No class found with possible names {modern = " + fullPath_1_17 + ", legacy = " + Arrays.toString(names) + "}");
-    }
-
-    /**
-     * Returns class from given name
-     * @param name - class name
-     * @return class from given name
-     * @throws ClassNotFoundException if class was not found
-     */
-    private Class<?> getLegacyClass(String name) throws ClassNotFoundException {
-        try {
-            return Class.forName("net.minecraft.server." + serverPackage + "." + name);
-        } catch (ClassNotFoundException | NullPointerException e) {
-            try {
-                //modded server?
-                Class<?> clazz = Main.class.getClassLoader().loadClass("net.minecraft.server." + serverPackage + "." + name);
-                if (clazz != null) return clazz;
-                throw new ClassNotFoundException(name);
-            } catch (ClassNotFoundException | NullPointerException e1) {
-                //maybe fabric?
-                return Class.forName(name);
-            }
-        }
-    }
-
-    /**
-     * Returns method with specified possible names and parameters. Throws exception if no such method was found
-     * @param clazz - class to get method from
-     * @param names - possible method names
-     * @param parameterTypes - parameter types of the method
-     * @return method with specified name and parameters
-     * @throws NoSuchMethodException if no such method exists
-     */
-    private Method getMethod(Class<?> clazz, String[] names, Class<?>... parameterTypes) throws NoSuchMethodException {
-        for (String name : names) {
-            try {
-                return getMethod(clazz, name, parameterTypes);
-            } catch (NoSuchMethodException e) {
-                //not the first method in array
-            }
-        }
-        List<String> list = new ArrayList<>();
-        for (Method m : clazz.getMethods()) {
-            if (m.getParameterCount() != parameterTypes.length) continue;
-            Class<?>[] types = m.getParameterTypes();
-            boolean valid = true;
-            for (int i=0; i<types.length; i++) {
-                if (types[i] != parameterTypes[i]) {
-                    valid = false;
-                    break;
-                }
-            }
-            if (valid) list.add(m.getName());
-        }
-        throw new NoSuchMethodException("No method found with possible names " + Arrays.toString(names) + " with parameters " +
-                Arrays.toString(parameterTypes) + " in class " + clazz.getName() + ". Methods with matching parameters: " + list);
-    }
-
-    private Method getMethod(Class<?> clazz, String name, Class<?>... parameterTypes) throws NoSuchMethodException {
-        List<Method> list = new ArrayList<>();
-        for (Method m : clazz.getMethods()) {
-            if (!m.getName().equals(name) || m.getParameterCount() != parameterTypes.length) continue;
-            Class<?>[] types = m.getParameterTypes();
-            boolean valid = true;
-            for (int i=0; i<types.length; i++) {
-                if (types[i] != parameterTypes[i]) {
-                    valid = false;
-                    break;
-                }
-            }
-            if (valid) list.add(m);
-        }
-        if (!list.isEmpty()) return list.get(0);
-        throw new NoSuchMethodException("No method found with name " + name + " in class " + clazz.getName() + " with parameters " + Arrays.toString(parameterTypes));
-    }
-
-    private List<Method> getMethods(Class<?> clazz, Class<?> returnType, Class<?>... parameterTypes){
-        List<Method> list = new ArrayList<>();
-        for (Method m : clazz.getDeclaredMethods()) {
-            if (m.getReturnType() != returnType || m.getParameterCount() != parameterTypes.length || !Modifier.isPublic(m.getModifiers())) continue;
-            Class<?>[] types = m.getParameterTypes();
-            boolean valid = true;
-            for (int i=0; i<types.length; i++) {
-                if (types[i] != parameterTypes[i]) {
-                    valid = false;
-                    break;
-                }
-            }
-            if (valid) list.add(m);
-        }
-        return list;
-    }
-
-    /**
-     * Returns all fields of class with defined class type
-     * @param clazz - class to check fields of
-     * @param type - field type to check for
-     * @return list of all fields with specified class type
-     */
-    private List<Field> getFields(Class<?> clazz, Class<?> type){
-        if (clazz == null) throw new IllegalArgumentException("Source class cannot be null");
-        List<Field> list = new ArrayList<>();
-        for (Field field : clazz.getDeclaredFields()) {
-            if (field.getType() == type) {
-                list.add(setAccessible(field));
-            }
-        }
-        return list;
-    }
-
-    /**
-     * Returns field with specified name and makes it accessible
-     * @param clazz - class to get field from
-     * @param name - field name
-     * @return accessible field with defined name
-     * @throws NoSuchFieldException if field was not found
-     */
-    private Field getField(Class<?> clazz, String name) throws NoSuchFieldException {
-        for (Field f : clazz.getDeclaredFields()) {
-            if (f.getName().equals(name) || (f.getName().split("_").length == 3 && f.getName().split("_")[2].equals(name))) {
-                return setAccessible(f);
-            }
-        }
-        throw new NoSuchFieldException("Field \"" + name + "\" was not found in class " + clazz.getName());
-    }
-
-    private Field getField(Class<?> clazz, String... potentialNames) throws NoSuchFieldException {
-        for (String name : potentialNames) {
-            try {
-                return getField(clazz, name);
-            } catch (NoSuchFieldException e) {
-                //not the first field name from array
-            }
-        }
-        throw new NoSuchFieldException("No field found in class " + clazz.getName() + " with potential names " + Arrays.toString(potentialNames));
-    }
-
-    private Enum[] getEnumValues(Class<?> enumClass) {
-        if (enumClass == null) throw new IllegalArgumentException("Class cannot be null");
-        if (!enumClass.isEnum()) throw new IllegalArgumentException(enumClass.getName() + " is not an enum class");
-        try {
-            return (Enum[]) enumClass.getMethod("values").invoke(null);
-        } catch (ReflectiveOperationException e) {
-            //this should never happen
-            TAB.getInstance().getErrorManager().criticalError("Failed to load enum constants of " + enumClass.getName(), e);
-            return new Enum[0];
-        }
-    }
-
-    public int getMinorVersion() {
-        return minorVersion;
-    }
-
-    public void setField(Object obj, Field field, Object value) throws IllegalAccessException {
-        field.set(obj, value);
-    }
-
-    public DataWatcherRegistry getDataWatcherRegistry() {
-        return registry;
-    }
-
-    public <T extends AccessibleObject> T setAccessible(T o) {
-        o.setAccessible(true);
-        return o;
-    }
-}
@@ -1,23 +1,24 @@
 package me.neznamy.tab.platforms.bukkit.nms;

-import java.util.Arrays;
-
+import lombok.Data;
 import me.neznamy.tab.api.protocol.TabPacket;

+/**
+ * Custom class for holding data used in PacketPlayOutEntityDestroy minecraft packet.
+ */
+@Data
 public class PacketPlayOutEntityDestroy implements TabPacket {

+    /** Destroyed entities */
    private final int[] entities;

+    /**
+     * Constructs new instance with given parameter
+     *
+     * @param   entities
+     *          Destroyed entities
+     */
    public PacketPlayOutEntityDestroy(int... entities) {
        this.entities = entities;
    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutEntityDestroy{entities=%s}", Arrays.toString(entities));
-    }
-
-    public int[] getEntities() {
-        return entities;
-    }
 }
@@ -1,31 +1,19 @@
 package me.neznamy.tab.platforms.bukkit.nms;

+import lombok.Data;
+import lombok.NonNull;
 import me.neznamy.tab.api.protocol.TabPacket;
-import me.neznamy.tab.api.util.Preconditions;
 import me.neznamy.tab.platforms.bukkit.nms.datawatcher.DataWatcher;

+/**
+ * Custom class for holding data used in PacketPlayOutEntityMetadata minecraft packet.
+ */
+@Data
 public class PacketPlayOutEntityMetadata implements TabPacket {

+    /** Entity's id */
    private final int entityId;

-    private final DataWatcher dataWatcher;
-
-    public PacketPlayOutEntityMetadata(int entityId, DataWatcher dataWatcher) {
-        Preconditions.checkNotNull(dataWatcher, "data watcher");
-        this.entityId = entityId;
-        this.dataWatcher = dataWatcher;
-    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutEntityMetadata{entityId=%s,dataWatcher=%s}", entityId, dataWatcher);
-    }
-
-    public int getEntityId() {
-        return entityId;
-    }
-
-    public DataWatcher getDataWatcher() {
-        return dataWatcher;
-    }
+    /** Entity's data that changed */
+    @NonNull private final DataWatcher dataWatcher;
 }
@@ -1,32 +1,19 @@
 package me.neznamy.tab.platforms.bukkit.nms;

-import me.neznamy.tab.api.util.Preconditions;
+import lombok.Data;
+import lombok.NonNull;
+import me.neznamy.tab.api.protocol.TabPacket;
 import org.bukkit.Location;

-import me.neznamy.tab.api.protocol.TabPacket;
-
+/**
+ * Custom class for holding data used in PacketPlayOutEntityTeleport minecraft packet.
+ */
+@Data
 public class PacketPlayOutEntityTeleport implements TabPacket {

+    /** Entity's id */
    private final int entityId;

-    private final Location location;
-
-    public PacketPlayOutEntityTeleport(int entityId, Location location) {
-        Preconditions.checkNotNull(location, "location");
-        this.entityId = entityId;
-        this.location = location;
-    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutEntityTeleport{entityId=%s,location=%s}", entityId, location);
-    }
-
-    public int getEntityId() {
-        return entityId;
-    }
-
-    public Location getLocation() {
-        return location;
-    }
+    /** Entity's new location */
+    @NonNull private final Location location;
 }
@@ -1,60 +1,32 @@
 package me.neznamy.tab.platforms.bukkit.nms;

-import java.util.UUID;
-
-import me.neznamy.tab.api.util.Preconditions;
+import lombok.Data;
+import lombok.NonNull;
+import me.neznamy.tab.api.protocol.TabPacket;
+import me.neznamy.tab.platforms.bukkit.nms.datawatcher.DataWatcher;
 import org.bukkit.Location;
 import org.bukkit.entity.EntityType;

-import me.neznamy.tab.api.protocol.TabPacket;
-import me.neznamy.tab.platforms.bukkit.nms.datawatcher.DataWatcher;
+import java.util.UUID;

+/**
+ * Custom class for holding data used in PacketPlayOutSpawnEntityLiving minecraft packet.
+ */
+@Data
 public class PacketPlayOutSpawnEntityLiving implements TabPacket {

+    /** Entity's id */
    private final int entityId;

-    private final UUID uuid;
+    /** Entity's UUID (for 1.9+ servers) */
+    @NonNull private final UUID uniqueId;

-    private final EntityType entityType;
+    /** Type of entity */
+    @NonNull private final EntityType entityType;

-    private final Location location;
+    /** Entity's spawn location */
+    @NonNull private final Location location;

+    /** Entity's data for 1.14- servers */
    private final DataWatcher dataWatcher;
-
-    public PacketPlayOutSpawnEntityLiving(int entityId, UUID uuid, EntityType entityType, Location location, DataWatcher dataWatcher) {
-        Preconditions.checkNotNull(uuid, "uuid");
-        Preconditions.checkNotNull(entityType, "entityType");
-        Preconditions.checkNotNull(location, "location");
-        this.entityId = entityId;
-        this.uuid = uuid;
-        this.entityType = entityType;
-        this.location = location;
-        this.dataWatcher = dataWatcher;
-    }
-
-    @Override
-    public String toString() {
-        return String.format("PacketPlayOutSpawnEntityLiving{entityId=%s,uuid=%s,entityType=%s,location=%s,dataWatcher=%s}", 
-                entityId, uuid, entityType, location, dataWatcher);
-    }
-
-    public int getEntityId() {
-        return entityId;
-    }
-
-    public UUID getUniqueId() {
-        return uuid;
-    }
-
-    public EntityType getEntityType() {
-        return entityType;
-    }
-
-    public Location getLocation() {
-        return location;
-    }
-
-    public DataWatcher getDataWatcher() {
-        return dataWatcher;
-    }
 }
@@ -1,37 +1,43 @@
 package me.neznamy.tab.platforms.bukkit.nms.datawatcher;

+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+import me.neznamy.tab.platforms.bukkit.nms.storage.NMSStorage;
+
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

-import me.neznamy.tab.api.util.Preconditions;
-import me.neznamy.tab.platforms.bukkit.nms.NMSStorage;
-
 /**
 * A class representing the n.m.s.DataWatcher class to make work with it much easier
 */
+@ToString
 public class DataWatcher {

-    //DataWatcher data
+    /** Watched data */
    private final Map<Integer, DataWatcherItem> dataValues = new HashMap<>();

-    //a helper for easier data write
-    private final DataWatcherHelper helper = new DataWatcherHelper(this);
+    /** Helper for easier data write */
+    @Getter private final DataWatcherHelper helper = new DataWatcherHelper(this);

    /**
     * Sets value into data values
-     * @param type - type of value
-     * @param value - value
+     *
+     * @param   type
+     *          type of value
+     * @param   value
+     *          value
     */
-    public void setValue(DataWatcherObject type, Object value){
-        Preconditions.checkNotNull(type, "type");
-        Preconditions.checkNotNull(value, "value");
+    public void setValue(@NonNull DataWatcherObject type, @NonNull Object value){
        dataValues.put(type.getPosition(), new DataWatcherItem(type, value));
    }

    /**
     * Removes value by position
-     * @param position - position of value to remove
+     *
+     * @param   position
+     *          position of value to remove
     */
    public void removeValue(int position) {
        dataValues.remove(position);
@@ -39,58 +45,54 @@ public class DataWatcher {

    /**
     * Returns item with given position
-     * @param position - position of item
-     * @return item or null if not set
+     *
+     * @param   position
+     *          position of item
+     * @return  item or null if not set
     */
    public DataWatcherItem getItem(int position) {
        return dataValues.get(position);
    }

-    /**
-     * Returns helper created by this instance
-     * @return data write helper
-     */
-    public DataWatcherHelper helper() {
-        return helper;
-    }
-
    /**
     * Converts the class into an instance of NMS.DataWatcher
-     * @return an instance of NMS.DataWatcher with same data
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     *
+     * @return  an instance of NMS.DataWatcher with same data
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    public Object toNMS() throws ReflectiveOperationException {
        NMSStorage nms = NMSStorage.getInstance();
        Object nmsWatcher;
        if (nms.newDataWatcher.getParameterCount() == 1) { //1.7+
-            Object[] args = new Object[] {null};
-            nmsWatcher = nms.newDataWatcher.newInstance(args);
+            nmsWatcher = nms.newDataWatcher.newInstance(new Object[] {null});
        } else {
            nmsWatcher = nms.newDataWatcher.newInstance();
        }
        for (DataWatcherItem item : dataValues.values()) {
            Object position;
            if (nms.getMinorVersion() >= 9) {
-                position = nms.newDataWatcherObject.newInstance(item.getType().getPosition(), item.getType().getClassType());
+                position = nms.newDataWatcherObject.newInstance(item.getType().getPosition(), item.getType().getSerializer());
            } else {
                position = item.getType().getPosition();
            }
            nms.DataWatcher_REGISTER.invoke(nmsWatcher, position, item.getValue());
+            if (nms.is1_19_3Plus()) nms.DataWatcher_markDirty.invoke(nmsWatcher, position);
        }
        return nmsWatcher;
    }

    /**
     * Reads NMS data watcher and returns and instance of this class with same data
-     * @param nmsWatcher - NMS DataWatcher to read
-     * @return an instance of this class with same values
-     * @throws    ReflectiveOperationException
-     *             if thrown by reflective operation
+     *
+     * @param   nmsWatcher
+     *          NMS DataWatcher to read
+     * @return  an instance of this class with same values
+     * @throws  ReflectiveOperationException
+     *          if thrown by reflective operation
     */
    @SuppressWarnings("unchecked")
-    public static DataWatcher fromNMS(Object nmsWatcher) throws ReflectiveOperationException {
-        Preconditions.checkNotNull(nmsWatcher, "nmsWatcher");
+    public static DataWatcher fromNMS(@NonNull Object nmsWatcher) throws ReflectiveOperationException {
        DataWatcher watcher = new DataWatcher();
        List<Object> items = (List<Object>) nmsWatcher.getClass().getMethod("c").invoke(nmsWatcher);
        if (items != null) {