* @param <V2> the type returned by the second future
   * @param <V3> the type returned by the third future
   * @param <V4> the type returned by the fourth future
   * @param <V5> the type returned by the fifth future
   */
  public static final class Combiner5<
          V1 extends @Nullable Object,
          V2 extends @Nullable Object,
          V3 extends @Nullable Object,
          V4 extends @Nullable Object,

   * @param <V2> the type returned by the second future
   * @param <V3> the type returned by the third future
   * @param <V4> the type returned by the fourth future
   * @param <V5> the type returned by the fifth future
   */
  public static final class Combiner5<
          V1 extends @Nullable Object,
          V2 extends @Nullable Object,
          V3 extends @Nullable Object,
          V4 extends @Nullable Object,

                       death."'


  `You are not attending!' said the Mouse to Alice severely.
`What are you thinking of?'

  `I beg your pardon,' said Alice very humbly:  `you had got to
the fifth bend, I think?'

  `I had NOT!' cried the Mouse, sharply and very angrily.

  `A knot!' said Alice, always ready to make herself useful, and
looking anxiously about her.  `Oh, do let me help to undo it!'