如何在Flutter中使用listview中的model类来显示嵌套的api数据？

import 'package:flutter/material.dart';
import 'package:dio/dio.dart';

// Model类
class ItemModel {
  final String title;
  final String description;

  ItemModel({required this.title, required this.description});
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter ListView Demo',
      home: Scaffold(
        appBar: AppBar(
          title: Text('ListView Demo'),
        ),
        body: FutureBuilder<List<ItemModel>>(
          future: fetchItems(), // 发送API请求并解析数据为Model对象的列表
          builder: (context, snapshot) {
            if (snapshot.hasData) {
              // 数据加载完成
              return ListView.builder(
                itemCount: snapshot.data!.length,
                itemBuilder: (context, index) {
                  // 构建每个列表项
                  return ListTile(
                    title: Text(snapshot.data![index].title),
                    subtitle: Text(snapshot.data![index].description),
                  );
                },
              );
            } else if (snapshot.hasError) {
              // 数据加载出错
              return Text('Error: ${snapshot.error}');
            }
            // 数据加载中
            return CircularProgressIndicator();
          },
        ),
      ),
    );
  }

  // 发送API请求并解析数据为Model对象的列表
  Future<List<ItemModel>> fetchItems() async {
    final response = await Dio().get('https://api.example.com/items');
    final data = response.data['items'] as List<dynamic>;
    return data.map((item) => ItemModel(
      title: item['title'],
      description: item['description'],
    )).toList();
  }
}

void main() {
  runApp(MyApp());
}