code: func DecodeWithCommonError(response []byte, apiName string) (err error) {
  	var commError CommonError
  	err = json.Unmarshal(response, &commError)
  	if err != nil {
  		return
  	}
  	if commError.ErrCode != 0 {
  		return fmt.Errorf("%s Error , errcode=%d , errmsg=%s", apiName, commError.ErrCode, commError.ErrMsg)
  	}
  	return nil
  }
docs: // DecodeWithCommonError 将返回值按照CommonError解析