### Question:
ConnectionManager implements Closeable { public HttpClient getHttpClient() { return httpClient; } private  ConnectionManager(ConnectionManager.Builder builder); ClientConfig getClientConfig(); HttpClient getHttpClient(); Serializer getSerializer(); boolean isSessionAutoManaged(); @Override void close();  }### Answer:
@Test @DisplayName("Check HTTP configuration") void httpClientTest() { assertThat(unit.getHttpClient()).isNotNull(); }