code: def auth_app_id(self, app_id, user_id, mount_point='app-id', use_token=True):
          
          params = {
              'app_id': app_id,
              'user_id': user_id,
          }
  
          return self.login('/v1/auth/{0}/login'.format(mount_point), json=params, use_token=use_token)
docs: POST /auth/<mount point>/login
  
          :param app_id:
          :type app_id:
          :param user_id:
          :type user_id:
          :param mount_point:
          :type mount_point:
          :param use_token:
          :type use_token:
          :return:
          :rtype: