@Override
  protected Release findLatestActiveRelease(String configAppId, String configClusterName, String configNamespace,
                                            ApolloNotificationMessages clientMessages) {
    return releaseService.findLatestActiveRelease(configAppId, configClusterName,
        configNamespace);
  }
@Test
  public void testLoadConfigWithDefaultClusterWithDataCenterRelease() throws Exception {
    when(releaseService.findLatestActiveRelease(someConfigAppId, someDataCenter, defaultNamespaceName))
        .thenReturn(someRelease);

    Release release = configService
        .loadConfig(someClientAppId, someClientIp, someClientLabel, someConfigAppId, defaultClusterName, defaultNamespaceName, someDataCenter,
            someNotificationMessages);

    verify(releaseService, times(1)).findLatestActiveRelease(someConfigAppId, someDataCenter, defaultNamespaceName);

    assertEquals(someRelease, release);
  }