How can i add multiple expand tile with checkbox list tile using Json in flutter

this json has two data first only name and second is inside there also name which is service name. ex 'Travel and Stay' and 'Religious' is main name which has to be displayed in expansion tile name and The 'Church/ Baptism' and 'Hindu Temples' is a subitem which is displayed inside checkbox list tile. Hope you understand :slightly_smiling_face: Please Help me

class _MyHomePageState extends State<MyHomePage> {
  var lovCountryServices = [
    {
      "services": [
        {
          "service_group_id": 22,
          "service_category": "B",
          "name": "Air Tickets",
          "id": 228
        },
        {
          "service_group_id": 22,
          "service_category": "W",
          "name": "Boys Hostel",
          "id": 229
        },
      ],
      "name": "Travel and Stay",
      "is_active": true,
      "id": 22
    },
    {
      "services": [
        {
          "service_group_id": 19,
          "service_category": "B",
          "name": "Church/ Baptism",
          "id": 193
        },
        {
          "service_group_id": 19,
          "service_category": "B",
          "name": "Hindu Temples",
          "id": 194
        }
      ],
      "name": "Religious",
      "is_active": true,
      "id": 19
    }
  ];
  List<_Result> _results = [];

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
          child: Column(
        children: <Widget>[
          ListView.builder(
            shrinkWrap: true,
            padding: const EdgeInsets.all(8.0),
            itemCount: lovCountryServices.length,
            itemBuilder: (BuildContext context, int index) {
              var item = lovCountryServices[index];
              var items= lovCountryServices[index]['services'];
              return ExpansionTile(
                title: Text(item['name']),
                children: <Widget>[
                  CheckboxListTile(
                    title: Text("temp"),
                    value: item['is_active'],
                    onChanged: (val) {
                      setState(() {
                        item['is_active'] = val;
                      });
                    },
                  ),
                ],
              );
            },
          ),
          RaisedButton(
            onPressed: () => print("sending to backend"),
            child: Text("SEND"),
          )
        ],
      )),
    );
  }
}

I want thw data in checkbox list tile right there is dummy data called TEMP and i want the data from json right now in json there is 'Boys Hostel' this data needs to comes inside the checkbox listtile. Hope you undestand please help me