@Bean
    @ConditionalOnMissingBean(HttpLongPollingDataChangedListener.class)
    public HttpLongPollingDataChangedListener httpLongPollingDataChangedListener(final HttpSyncProperties httpSyncProperties) {
        return new HttpLongPollingDataChangedListener(httpSyncProperties);
    }
@Test
    public void testHttpLongPollingDataChangedListener() {
        final HttpSyncProperties httpSyncProperties = new HttpSyncProperties();
        HttpLongPollingSyncConfiguration httpLongPollingListener = new HttpLongPollingSyncConfiguration();
        assertNotNull(httpLongPollingListener.httpLongPollingDataChangedListener(httpSyncProperties));
    }