code: def list(self, department_id, fetch_child=False, status=0, simple=False):
          
          url = 'user/simplelist' if simple else 'user/list'
          res = self._get(
              url,
              params={
                  'department_id': department_id,
                  'fetch_child': 1 if fetch_child else 0,
                  'status': status
              }
          )
          return res['userlist']
docs: 批量获取部门成员 / 批量获取部门成员详情
  
          https://work.weixin.qq.com/api/doc#90000/90135/90200
          https://work.weixin.qq.com/api/doc#90000/90135/90201
  
          此接口和 `WeChatDepartment.get_users` 是同一个接口，区别为 simple 的默认值不同。