HarmonyOS @Watch装饰器，能监听对象中某个属性的变化值吗？

@Entry
@Component
struct testPage {
  @State @Watch('change') person: Person = new Person('Peppa', 25, 'male')
  @State message: string = 'Hello World';
  @State nameTemp: string = this.person.name
  @State ageTemp: number = this.person.age
  @State genderTemp: string = this.person.gender

  //
  change() {
    // console.log(`信息改变了：${JSON.stringify(this.person)}`)
    if (this.nameTemp !== this.person.name) {
      console.log(`名字信息改变了：${JSON.stringify(this.person.name)}`)
      //处理名字属性改变的逻辑/调用相关方法
    }
    if (this.ageTemp !== this.person.age) {
      console.log(`年龄信息改变了：${JSON.stringify(this.person.age)}`)
      //处理年龄属性改变的逻辑/调用相关方法
    }
    if (this.genderTemp !== this.person.gender) {
      console.log(`性别信息改变了：${JSON.stringify(this.person.gender)}`)
      //处理性别属性改变的逻辑/调用相关方法
    }

  }

  build() {
    Column({ space: 10 }) {
      Text(`当前信息：${JSON.stringify(this.person)}`)
      Button() {
        Text('11点击一下')
      }.type(ButtonType.Capsule).padding({ left: 5, right: 5 }).onClick(() => {
        let person = new Person('Utopia', 25, 'female')
        this.person = person
      })

    }
    .width('100%')
    .height('100%')
    .justifyContent(FlexAlign.Center)
  }
}


class Person {
  constructor(name: string, age: number, gender: string) {
    this.name = name;
    this.age = age;
    this.gender = gender;
  }

  name: string
  age: number
  gender: string
}
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