code: def users_info(self, user_id=None, username=None, **kwargs):
          
          if user_id:
              return self.__call_api_get('users.info', userId=user_id, kwargs=kwargs)
          elif username:
              return self.__call_api_get('users.info', username=username, kwargs=kwargs)
          else:
              raise RocketMissingParamException('userID or username required')
docs: Gets a user’s information, limited to the caller’s permissions.