Add methods to get translation keys

Co-authored-by: MeFisto94 <MeFisto94@users.noreply.github.com>

paper-api/src/main/java/org/bukkit/Material.java

@@ -136,7 +136,7 @@ import org.jetbrains.annotations.Nullable;
  * An enum of all material IDs accepted by the official server and client
  */
 @SuppressWarnings({"DeprecatedIsStillUsed", "deprecation"}) // Paper
-public enum Material implements Keyed, Translatable {
+public enum Material implements Keyed, Translatable, net.kyori.adventure.translation.Translatable { // Paper
     //<editor-fold desc="Materials" defaultstate="collapsed">
     AIR(9648, 0),
     STONE(22948),
@@ -4834,6 +4834,17 @@ public enum Material implements Keyed, Translatable {
     }
     // Paper end
 
+    // Paper start - add Translatable
+    @Override
+    public @NotNull String translationKey() {
+        if (this.isItem()) {
+            return java.util.Objects.requireNonNull(this.asItemType()).translationKey();
+        } else {
+            return java.util.Objects.requireNonNull(this.asBlockType()).translationKey();
+        }
+    }
+    // Paper end - add Translatable
+
     /**
      * Do not use for any reason.
      *
@@ -5583,9 +5594,11 @@ public enum Material implements Keyed, Translatable {
      * material
      * @see #getBlockTranslationKey()
      * @see #getItemTranslationKey()
+     * @deprecated use {@link #translationKey()}
      */
     @Override
     @NotNull
+    @Deprecated(forRemoval = true) // Paper
     public String getTranslationKey() {
         if (this.isItem()) {
             return asItemType().getTranslationKey();