feat(nbt): add isEmpty to CompoundBinaryTag/ListBinaryTag

nbt/src/main/java/net/kyori/adventure/nbt/CompoundBinaryTag.java

@@ -99,6 +99,14 @@ public interface CompoundBinaryTag extends BinaryTag, CompoundTagSetter<Compound
    */
   int size();
 
+  /**
+   * Returns whether the compound has tags or not.
+   *
+   * @return false if the compound has tags
+   * @since 4.18.0
+   */
+  boolean isEmpty();
+
   /**
    * Gets a boolean.
    *

nbt/src/main/java/net/kyori/adventure/nbt/CompoundBinaryTagImpl.java

@@ -68,6 +68,11 @@ public int size() {
     return this.tags.size();
   }
 
+  @Override
+  public boolean isEmpty() {
+    return this.tags.isEmpty();
+  }
+
   @Override
   public @NotNull CompoundBinaryTag put(final @NotNull String key, final @NotNull BinaryTag tag) {
     return this.edit(map -> map.put(key, tag));

nbt/src/main/java/net/kyori/adventure/nbt/ListBinaryTag.java

@@ -154,6 +154,14 @@ public interface ListBinaryTag extends ListTagSetter<ListBinaryTag, BinaryTag>,
    */
   int size();
 
+  /**
+   * Returns whether the list has elements or not.
+   *
+   * @return false if the list has elements
+   * @since 4.18.0
+   */
+  boolean isEmpty();
+
   /**
    * Gets a tag.
    *

nbt/src/main/java/net/kyori/adventure/nbt/ListBinaryTagImpl.java

@@ -61,6 +61,11 @@ public int size() {
     return this.tags.size();
   }
 
+  @Override
+  public boolean isEmpty() {
+    return this.tags.isEmpty();
+  }
+
   @Override
   public @NotNull BinaryTag get(@Range(from = 0, to = Integer.MAX_VALUE) final int index) {
     return this.tags.get(index);