`Take off your hat,' the King said to the Hatter.

  `It isn't mine,' said the Hatter.

  `Stolen!' the King exclaimed, turning to the jury, who
instantly made a memorandum of the fact.

  `I keep them to sell,' the Hatter added as an explanation;
`I've none of my own.  I'm a hatter.'

  Here the Queen put on her spectacles, and began staring at the
Hatter, who turned pale and fidgeted.

    ListenableFuture<Bar> f2 = transformAsync(f1, function, directExecutor());
    f1.cancel(true);
    assertTrue(f2.isCancelled());
    /*
     * We might like to propagate interruption, too, but it's not clear that it matters. For now, we
     * test for the behavior that we have today.
     */
    assertFalse(((AbstractFuture<?>) f2).wasInterrupted());
  }

  /*

  @Override
  public boolean containsValue(@CheckForNull Object value) {
    // does not impact recency ordering
    if (value == null) {
      return false;
    }

    // This implementation is patterned after ConcurrentHashMap, but without the locking. The only
    // way for it to return a false negative would be for the target value to jump around in the map

    ListenableFuture<Bar> f2 = transformAsync(f1, function, directExecutor());
    f1.cancel(true);
    assertTrue(f2.isCancelled());
    /*
     * We might like to propagate interruption, too, but it's not clear that it matters. For now, we
     * test for the behavior that we have today.
     */
    assertFalse(((AbstractFuture<?>) f2).wasInterrupted());
  }

  /*

  `Take off your hat,' the King said to the Hatter.

  `It isn't mine,' said the Hatter.

  `Stolen!' the King exclaimed, turning to the jury, who
instantly made a memorandum of the fact.

  `I keep them to sell,' the Hatter added as an explanation;
`I've none of my own.  I'm a hatter.'

  Here the Queen put on her spectacles, and began staring at the
Hatter, who turned pale and fidgeted.

  @Override
  public boolean containsValue(@CheckForNull Object value) {
    // does not impact recency ordering
    if (value == null) {
      return false;
    }

    // This implementation is patterned after ConcurrentHashMap, but without the locking. The only
    // way for it to return a false negative would be for the target value to jump around in the map