@Test
public void create() throws ExecutionException, InterruptedException {

    Flowable<Integer> flowable = Flowable.fromArray(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
            .subscribeOn(Schedulers.computation());
    List<Integer> list = ReactiveStreams.fromPublisher(flowable).limit(5).toList().run()
            .toCompletableFuture().get();
    assertThat(list).hasSize(5).containsExactly(1, 2, 3, 4, 5);
}