SimpleTest4.java

...
final List<News> result = new ArrayList<>();
CountDownLatch countDownLatch = new CountDownLatch(1);
Api.<GetNewsMethod>createMethod(ApiKeys.GET_NEWS)
        .setCallback(new GetNewsMethod.GetNewsResult() {
            @Override
            public void showLoading() {}

            @Override
            public void onNewsLoaded(@NonNull List<News> news) {
                assertFalse(news.isEmpty());
                result.addAll(news);
                countDownLatch.countDown();
            }

            @Override
            public void onError(@Nullable String msg) {
                fail(msg);
                countDownLatch.countDown();
            }
        }).send();