CommonServerMessageBlockRequest asyncRequest = mock(CommonServerMessageBlockRequest.class);

        when(asyncRequest.isResponseAsync()).thenReturn(true);
        when(regularRequest.isResponseAsync()).thenReturn(false);

        doNothing().when(response).prepare(any());

        // When
        response.prepare(regularRequest);
        response.prepare(asyncRequest);
        response.prepare(null);

    server.enqueue(MockResponse(body = "A"))
    val executor = Executors.newCachedThreadPool(threadFactory("HttpOverHttp2Test"))
    val countDownLatch = CountDownLatch(2)
    executor.execute(AsyncRequest("/r1", countDownLatch))
    executor.execute(AsyncRequest("/r2", countDownLatch))
    countDownLatch.await()
    assertThat(server.takeRequest().exchangeIndex).isEqualTo(0)
    assertThat(server.takeRequest().exchangeIndex).isEqualTo(1)
  }