* ClosingFuture} pipeline.
   *
   * @param <V> the type of the final value of a successful pipeline
   * @see ClosingFuture#finishToValueAndCloser(ValueAndCloserConsumer, Executor)
   */
  public interface ValueAndCloserConsumer<V extends @Nullable Object> {

    /** Accepts a {@link ValueAndCloser} for the last step in a {@link ClosingFuture} pipeline. */
    void accept(ValueAndCloser<V> valueAndCloser);