apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/api/AdminServiceAPI.java/AdminServiceAPI/createRelease
class AdminServiceAPI:    public ReleaseDTO createRelease(String appId, Env env, String clusterName, String namespace,
        String releaseName, String releaseComment, String operator,
        boolean isEmergencyPublish) {
      HttpHeaders headers = new HttpHeaders();
      headers.setContentType(MediaType.parseMediaType(MediaType.APPLICATION_FORM_URLENCODED_VALUE + ";charset=UTF-8"));
      MultiValueMap<String, String> parameters = new LinkedMultiValueMap<>();
      parameters.add("name", releaseName);
      parameters.add("comment", releaseComment);
      parameters.add("operator", operator);
      parameters.add("isEmergencyPublish", String.valueOf(isEmergencyPublish));
      HttpEntity<MultiValueMap<String, String>> entity =
          new HttpEntity<>(parameters, headers);
      ReleaseDTO response = restTemplate.post(
          env, "apps/{appId}/clusters/{clusterName}/namespaces/{namespaceName}/releases", entity,
          ReleaseDTO.class, appId, clusterName, namespace);
      return response;
    }