}

  /**
   * Returns an {@link AsyncClosingFunction} that applies an {@link AsyncFunction} to an input,
   * ignoring the DeferredCloser and returning a {@code ClosingFuture} derived from the returned
   * {@link ListenableFuture}.
   *
   * <p>Use this method to pass a transformation to {@link #transformAsync(AsyncClosingFunction,
   * Executor)} or to {@link #catchingAsync(Class, AsyncClosingFunction, Executor)} as long as it

      return waitFor(closingFunction, ClosingFunction.class);
    }

    @SuppressWarnings("unchecked") // proxy for a generic class
    <T, U> AsyncClosingFunction<T, U> waitFor(AsyncClosingFunction<T, U> asyncClosingFunction) {
      return waitFor(asyncClosingFunction, AsyncClosingFunction.class);
    }

    @SuppressWarnings("unchecked") // proxy for a generic class

      return waitFor(closingFunction, ClosingFunction.class);
    }

    @SuppressWarnings("unchecked") // proxy for a generic class
    <T, U> AsyncClosingFunction<T, U> waitFor(AsyncClosingFunction<T, U> asyncClosingFunction) {
      return waitFor(asyncClosingFunction, AsyncClosingFunction.class);
    }

    @SuppressWarnings("unchecked") // proxy for a generic class