apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/api/AdminServiceAPI.java/ReleaseHistoryAPI/findReleaseHistoriesByNamespace
class ReleaseHistoryAPI:    public PageDTO<ReleaseHistoryDTO> findReleaseHistoriesByNamespace(String appId, Env env, String clusterName,
        String namespaceName, int page, int size) {
      return restTemplate.get(env,
          "/apps/{appId}/clusters/{clusterName}/namespaces/{namespaceName}/releases/histories?page={page}&size={size}",
          type, appId, clusterName, namespaceName, page, size).getBody();
    }