`It proves nothing of the sort!' said Alice.  `Why, you don't
even know what they're about!'

  `Read them,' said the King.

  The White Rabbit put on his spectacles.  `Where shall I begin,
please your Majesty?' he asked.

  `Begin at the beginning,' the King said gravely, `and go on
till you come to the end:  then stop.'

  These were the verses the White Rabbit read:--

        `They told me you had been to her,

  `It proves nothing of the sort!' said Alice.  `Why, you don't
even know what they're about!'

  `Read them,' said the King.

  The White Rabbit put on his spectacles.  `Where shall I begin,
please your Majesty?' he asked.

  `Begin at the beginning,' the King said gravely, `and go on
till you come to the end:  then stop.'

  These were the verses the White Rabbit read:--

        `They told me you had been to her,

 * <h4>Automatically closing</h4>
 *
 * You can extract a {@link Future} that represents the result of the last step in the pipeline by
 * calling {@link #finishToFuture()}. All objects the pipeline has captured for closing will begin
 * to be closed asynchronously <b>after</b> the returned {@code Future} is done: the future
 * completes before closing starts, rather than once it has finished.
 *
 * <pre>{@code
 * FluentFuture<UserName> userName =