如何在angular2中定义具有复杂json结构的模型[typescript]？

export class Person {
  name: string;
  age: number;
  address: Address;
}

export class Address {
  street: string;
  city: string;
  state: string;
}

import { Component } from '@angular/core';
import { Person } from './person';

@Component({
  selector: 'app-root',
  template: `
    <div>
      <h2>{{ person.name }}</h2>
      <p>Age: {{ person.age }}</p>
      <p>Address: {{ person.address.street }}, {{ person.address.city }}, {{ person.address.state }}</p>
    </div>
  `
})
export class AppComponent {
  person: Person;

  constructor() {
    this.person = new Person();
    this.person.name = 'John Doe';
    this.person.age = 30;
    this.person.address = new Address();
    this.person.address.street = '123 Main St';
    this.person.address.city = 'New York';
    this.person.address.state = 'NY';
  }
}