如何为angular4+服务中的设置器构建接口？

export interface Setter {
  setProperty(value: any): void;
  getProperty(): any;
}

import { Injectable } from '@angular/core';

@Injectable()
export class MyService implements Setter {
  private property: any;

  setProperty(value: any): void {
    this.property = value;
  }

  getProperty(): any {
    return this.property;
  }
}

import { Component } from '@angular/core';
import { MyService } from './my.service';

@Component({
  selector: 'app-my-component',
  template: `
    <button (click)="setProperty('Hello')">Set Property</button>
    <p>Property: {{ getProperty() }}</p>
  `,
})
export class MyComponent {
  constructor(private myService: MyService) {}

  setProperty(value: any): void {
    this.myService.setProperty(value);
  }

  getProperty(): any {
    return this.myService.getProperty();
  }
}