*
 * @author mike nonemacher
 */
@GwtCompatible
@NullUnmarked
final class TestingRemovalListeners {

  /** Returns a new no-op {@code RemovalListener}. */
  static <K, V> NullRemovalListener<K, V> nullRemovalListener() {
    return new NullRemovalListener<>();
  }

  /** Type-inferring factory method for creating a {@link QueuingRemovalListener}. */
  @GwtIncompatible // ConcurrentLinkedQueue