delegate.stopAsync();
    return this;
  }

  /** @since 15.0 */
  @Override
  public final void awaitRunning() {
    delegate.awaitRunning();
  }

  /** @since 15.0 */
  @Override
  public final void awaitRunning(long timeout, TimeUnit unit) throws TimeoutException {
    delegate.awaitRunning(timeout, unit);
  }

  /** @since 15.0 */
  @Override
  public final void awaitTerminated() {