如何在Flutter中解析嵌套的JSON数组？

import 'dart:convert';

class User {
  final String name;
  final int age;

  User({required this.name, required this.age});

  factory User.fromJson(Map<String, dynamic> json) {
    return User(
      name: json['name'],
      age: json['age'],
    );
  }
}

void main() {
  String jsonString = '''
    {
      "users": [
        {
          "name": "Alice",
          "age": 25
        },
        {
          "name": "Bob",
          "age": 30
        }
      ]
    }
  ''';

  Map<String, dynamic> json = jsonDecode(jsonString);
  List<dynamic> userJsonList = json['users'];

  List<User> users = userJsonList.map((userJson) => User.fromJson(userJson)).toList();

  for (var user in users) {
    print('Name: ${user.name}, Age: ${user.age}');
  }
}