apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/api/AdminServiceAPI.java/ReleaseAPI/findActiveReleases
class ReleaseAPI:    public List<ReleaseDTO> findActiveReleases(String appId, Env env, String clusterName, String namespaceName,
        int page,
        int size) {
      ReleaseDTO[] releaseDTOs = restTemplate.get(
          env, "apps/{appId}/clusters/{clusterName}/namespaces/{namespaceName}/releases/active?page={page}&size={size}",
          ReleaseDTO[].class,
          appId, clusterName, namespaceName, page, size);
      return Arrays.asList(releaseDTOs);
    }