如何知道子元素何时在Angular中完成渲染？

import { Component, AfterViewInit, ViewChild, ElementRef } from '@angular/core';

@Component({
  selector: 'app-example',
  template: `
    <div #childElement>子元素内容</div>
  `
})
export class ExampleComponent implements AfterViewInit {
  @ViewChild('childElement', { static: false }) childElement: ElementRef;

  ngAfterViewInit() {
    // 子元素已完成渲染
    console.log('子元素已完成渲染');
    console.log(this.childElement.nativeElement.textContent);
  }
}