官方文档地址： https://open.dingtalk.com/document/orgapp-server/obtain-the-department-list GetAllDepts 获取所有部门.

官方文档地址： https://open.dingtalk.com/document/orgapp-server/queries-the-complete-information-of-a-department-user GetAllUsers 获取所有员工信息.

官方文档：https://open.dingtalk.com/document/orgapp-server/intelligent-personnel-query-company-turnover-list GetLeaveUserIds 获取离职人员ID列表.

官方文档：https://open.dingtalk.com/document/orgapp/query-the-details-of-employees-who-have-left-office GetLeaveUserIdsByDateRange 新接口根据时间范围获取离职人员ID列表 GetHrmempLeaveRecordsKey = "/v1.0/contact/empLeaveRecords".