/// <summary>
 /// 通过节点查询组织机构子节点
 /// </summary>
 /// <param name="orgNode">机构节点</param>
 /// <returns></returns>
 public List <DepartmentModel> GetOrgByOrgNode(string orgNode)
 {
     return(organizationProvider.GetOrgByOrgNode(orgNode));
 }