*/
    public final <V extends @Nullable Object> ClosingFuture<V> callAsync(
        AsyncCombiningCallable<V> combiningCallable, Executor executor) {
      AsyncCallable<V> asyncCallable =
          new AsyncCallable<V>() {
            @Override
            public ListenableFuture<V> call() throws Exception {
              return new Peeker(inputs).callAsync(combiningCallable, closeables);
            }

    SettableFuture<String> stringFuture = SettableFuture.create();
    AsyncCallable<String> combiner = () -> stringFuture;

    ListenableFuture<String> futureResult = whenAllComplete().callAsync(combiner, directExecutor());

    assertThat(Thread.interrupted()).isFalse();
    futureResult.cancel(true);
    assertThat(Thread.interrupted()).isFalse();
  }

  @J2ktIncompatible // Wildcard generics

    SettableFuture<String> stringFuture = SettableFuture.create();
    AsyncCallable<String> combiner = () -> stringFuture;

    ListenableFuture<String> futureResult = whenAllComplete().callAsync(combiner, directExecutor());

    assertThat(Thread.interrupted()).isFalse();
    futureResult.cancel(true);
    assertThat(Thread.interrupted()).isFalse();
  }

  @J2ktIncompatible // Wildcard generics