如何将json解析为列表而不是flutter中的map

[
  {"name": "John", "age": 25},
  {"name": "Jane", "age": 30},
  {"name": "Bob", "age": 35}
]

class Person {
  final String name;
  final int age;

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

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

import 'dart:convert';

String jsonString = '[{"name": "John", "age": 25}, {"name": "Jane", "age": 30}, {"name": "Bob", "age": 35}]';
dynamic json = jsonDecode(jsonString);

List<Person> persons = List<Person>.from(json.map((personJson) => Person.fromJson(personJson)));