}

  /** A wrapped future that does not propagate cancellation to its delegate. */
  private static final class NonCancellationPropagatingFuture<V extends @Nullable Object>
      extends AbstractFuture.TrustedFuture<V> implements Runnable {
    @CheckForNull @LazyInit private ListenableFuture<V> delegate;

    NonCancellationPropagatingFuture(final ListenableFuture<V> delegate) {
      this.delegate = delegate;
    }

    @Override