RxJavaCreate { @NonNull public static Observable<Integer> async() { return Observable.just(1) .subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()); }  @NonNull static Observable<Integer> observableWithCreate(); @NonNull static Observable<Integer> from(); @NonNull static Observable<Integer> async();  }
@Test public void testAsync() throws Exception { assertNotNull(RxJavaCreate.async()); }