如何对类进行建模，以便在Flutter中将Dart对象(Map<String，List>)序列化为JSON？

class MyClass {
  String name;
  int age;
  List<String> hobbies;

  MyClass({this.name, this.age, this.hobbies});
}

class MyClass {
  String name;
  int age;
  List<String> hobbies;

  MyClass({this.name, this.age, this.hobbies});

  Map<String, dynamic> toJson() {
    return {
      'name': name,
      'age': age,
      'hobbies': hobbies,
    };
  }
}

import 'dart:convert';

void main() {
  MyClass myObject = MyClass(
    name: 'John',
    age: 25,
    hobbies: ['reading', 'coding'],
  );

  String jsonString = jsonEncode(myObject.toJson());
  print(jsonString);
}

{"name":"John","age":25,"hobbies":["reading","coding"]}