apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/api/AdminServiceAPI.java/ReleaseAPI/loadLatestRelease
class ReleaseAPI:    public ReleaseDTO loadLatestRelease(String appId, Env env, String clusterName,
        String namespace) {
      ReleaseDTO releaseDTO = restTemplate
          .get(env, "apps/{appId}/clusters/{clusterName}/namespaces/{namespaceName}/releases/latest",
              ReleaseDTO.class, appId, clusterName, namespace);
      return releaseDTO;
    }