curl -X POST "https://api.dingtalk.io/topapi/v2/department/listsubid" \
-H 'Content-Type:application/x-www-form-urlencoded;charset=utf-8' \
-d 'access_token=0dcxxxx108dcd028' \
-d 'dept_id=100'

DingTalkClient client = new DefaultDingTalkClient("https://api.dingtalk.io/topapi/v2/department/listsubid");
OapiV2DepartmentListsubidRequest req = new OapiV2DepartmentListsubidRequest();
req.setDeptId(100L);
OapiV2DepartmentListsubidResponse rsp = client.execute(req, access_token);
System.out.println(rsp.getBody());

import dingtalk.api

req=dingtalk.api.OapiV2DepartmentListsubidRequest("https://api.dingtalk.io/topapi/v2/department/listsubid")

req.dept_id=100
try:
  resp= req.getResponse(access_token)
  print(resp)
except Exception,e:
  print(e)

include "TopSdk.php";
date_default_timezone_set('Asia/Shanghai');

$c = new DingTalkClient(DingTalkConstant::$CALL_TYPE_OAPI, DingTalkConstant::$METHOD_POST , DingTalkConstant::$FORMAT_JSON);
$req = new OapiV2DepartmentListsubidRequest;
$req->setDeptId("100");
$resp = $c->execute($req, $access_token, "https://api.dingtalk.io/topapi/v2/department/listsubid");

IDingTalkClient client = new DefaultDingTalkClient("https://api.dingtalk.io/topapi/v2/department/listsubid");
OapiV2DepartmentListsubidRequest req = new OapiV2DepartmentListsubidRequest();
req.DeptId = 100L;
OapiV2DepartmentListsubidResponse rsp = client.Execute(req, access_token);
Console.WriteLine(rsp.Body);

{
  "errcode": 0,
  "errmsg":"ok",
  "result": {
    "dept_id_list": [
      379xxxx95,
      411xxxx76,
      399xxxx96,
      400xxxx83,
      404xxxx47
    ]
  },
  "request_id": "169dfniaazqb4"
}