/**
   * Returns the backing delegate instance that methods are forwarded to. Abstract subclasses
   * generally override this method with an abstract method that has a more specific return type,
   * such as {@link ForwardingSet#delegate}. Concrete subclasses override this method to supply the
   * instance being decorated.
   */
  protected abstract Object delegate();

    private final ConverterLookup delegate = new DefaultConverterLookup();

    EnhancedConverterLookup() {
        registerConverter(new DefaultBeanConfigurator.PathConverter());
        registerConverter(new DefaultBeanConfigurator.XmlConverter());
    }

    @Override
    public void registerConverter(ConfigurationConverter converter) {
        delegate.registerConverter(converter);
    }

    @Override

  /**
   * An SSL socket factory that forwards all calls to a delegate. Override {@link #configureSocket}
   * to customize a created socket before it is returned.
   */
  static class DelegatingSSLSocketFactory extends SSLSocketFactory {
    protected final SSLSocketFactory delegate;

    DelegatingSSLSocketFactory(SSLSocketFactory delegate) {
      this.delegate = delegate;
    }

  public boolean isTerminated() {
    return delegate().isTerminated();
  }

  @Override
  public void shutdown() {
    delegate().shutdown();
  }

  @Override
  @CanIgnoreReturnValue
  public List<Runnable> shutdownNow() {
    return delegate().shutdownNow();
  }

  @Override
  public void execute(Runnable command) {
    delegate().execute(command);
  }

  @Override

    // This allows us to only start up a thread waiting on the delegate future when the first
    // listener is added.
    private final AtomicBoolean hasListeners = new AtomicBoolean(false);

    // The delegate future.
    private final Future<V> delegate;

    ListenableFutureAdapter(Future<V> delegate) {
      this(delegate, defaultAdapterExecutor);
    }

    // this is a live injected collection
    protected final List<ArtifactFilterManagerDelegate> delegates;

    protected Set<String> excludedArtifacts;

    private final Set<String> coreArtifacts;

    @Inject
    public DefaultArtifactFilterManager(List<ArtifactFilterManagerDelegate> delegates, CoreExports coreExports) {
        this.delegates = delegates;
        this.coreArtifacts = coreExports.getExportedArtifacts();
    }

  }

  @Override
  public final boolean isRunning() {
    return delegate.isRunning();
  }

  @Override
  public final State state() {
    return delegate.state();
  }

  /** @since 13.0 */
  @Override
  public final void addListener(Listener listener, Executor executor) {
    delegate.addListener(listener, executor);
  }

  /** @since 14.0 */
  @Override

      insertionOrder = castOrCopyToList(delegate.order(insertionOrder));
      reverse(insertionOrder);
      return insertionOrder;
    }

    TestSortedMapGenerator<K, V> delegate() {
      return (TestSortedMapGenerator<K, V>) delegate;
    }

    @Override
    public Entry<K, V> belowSamplesLesser() {
      return delegate().aboveSamplesGreater();
    }

    @Override

    }
    Set<E> delegate = delegateOrNull();
    return (delegate != null)
        ? delegate.spliterator()
        : Spliterators.spliterator(
            requireElements(), 0, size, Spliterator.DISTINCT | Spliterator.ORDERED);
  }

  @Override
  public void forEach(Consumer<? super E> action) {
    checkNotNull(action);
    Set<E> delegate = delegateOrNull();
    if (delegate != null) {

    implements ScheduledExecutorService {
  final ScheduledExecutorService delegate;

  protected WrappingScheduledExecutorService(ScheduledExecutorService delegate) {
    super(delegate);
    this.delegate = delegate;
  }

  @Override
  public final ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {
    return delegate.schedule(wrapTask(command), delay, unit);
  }

  @Override