apollo-configservice/src/main/java/com/ctrip/framework/apollo/configservice/service/config/DefaultConfigService.java/DefaultConfigService/findLatestActiveRelease
class DefaultConfigService:  @Override
  protected Release findLatestActiveRelease(String configAppId, String configClusterName, String configNamespace,
                                            ApolloNotificationMessages clientMessages) {
    return releaseService.findLatestActiveRelease(configAppId, configClusterName,
        configNamespace);
  }