Disable InterfaceIsType Checkstyle check

checkstyle.xml

@@ -84,7 +84,6 @@
 
         <!-- See http://checkstyle.sourceforge.net/config_design.html -->
         <module name="FinalClass"/>
-        <module name="InterfaceIsType"/>
 
         <!-- See http://checkstyle.sourceforge.net/config_misc.html -->
         <module name="ArrayTypeStyle"/>

src/main/java/org/bukkit/inventory/meta/trim/TrimMaterial.java

@@ -6,7 +6,6 @@ import org.bukkit.MinecraftExperimental;
 import org.bukkit.NamespacedKey;
 import org.bukkit.Registry;
 import org.jetbrains.annotations.ApiStatus;
-import org.jetbrains.annotations.NotNull;
 
 /**
  * Represents a material that may be used in an {@link ArmorTrim}.
@@ -59,8 +58,4 @@ public interface TrimMaterial extends Keyed {
      * {@link Material#AMETHYST_SHARD}.
      */
     public static final TrimMaterial AMETHYST = Registry.TRIM_MATERIAL.get(NamespacedKey.minecraft("amethyst"));
-
-    @NotNull
-    @Override
-    public NamespacedKey getKey(); // Satisfies Checkstyle for now
 }

src/main/java/org/bukkit/inventory/meta/trim/TrimPattern.java

@@ -6,7 +6,6 @@ import org.bukkit.MinecraftExperimental;
 import org.bukkit.NamespacedKey;
 import org.bukkit.Registry;
 import org.jetbrains.annotations.ApiStatus;
-import org.jetbrains.annotations.NotNull;
 
 /**
  * Represents a pattern that may be used in an {@link ArmorTrim}.
@@ -63,8 +62,4 @@ public interface TrimPattern extends Keyed {
      * {@link Material#SPIRE_ARMOR_TRIM_SMITHING_TEMPLATE}.
      */
     public static final TrimPattern SPIRE = Registry.TRIM_PATTERN.get(NamespacedKey.minecraft("spire"));
-
-    @NotNull
-    @Override
-    public NamespacedKey getKey(); // Satisfies Checkstyle for now
 }