是否要更新Angular2 FormGroup嵌套值？

import { Component, OnInit } from '@angular/core';
import { FormGroup, FormControl } from '@angular/forms';

@Component({
  selector: 'app-example',
  template: `
    <form [formGroup]="myForm">
      <input formControlName="name" placeholder="Name">
      <input formControlName="age" placeholder="Age">
    </form>
    <button (click)="updateValues()">Update Values</button>
  `,
})
export class ExampleComponent implements OnInit {
  myForm: FormGroup;

  ngOnInit() {
    this.myForm = new FormGroup({
      name: new FormControl('John'),
      age: new FormControl(25),
    });
  }

  updateValues() {
    this.myForm.patchValue({
      name: 'Jane',
      age: 30,
    });
  }
}