@BeforeEach
    void setUp() {
        clientFactory = ClientFactory.builder()
                                     .workerGroup(1)
                                     .connectionPoolListener(connectionPoolListenerWrapper)
                                     .build();
    }
Makes sure Armeria HTTP client respects {@code MAX_CONCURRENT_STREAMS} HTTP/2 setting.
core/src/test/java/com/linecorp/armeria/client/HttpClientMaxConcurrentStreamTest.java