如何以编程方式将错误追加到FormGroup控件？

import { FormBuilder, FormGroup, Validators } from '@angular/forms';

@Component({
  selector: 'app-my-form',
  template: `
    <form [formGroup]="myForm">
      <input formControlName="name" placeholder="Name">
    </form>
  `,
})
export class MyFormComponent implements OnInit {
  myForm: FormGroup;

  constructor(private formBuilder: FormBuilder) { }

  ngOnInit() {
    this.myForm = this.formBuilder.group({
      name: ['', Validators.required]
    });

    const control = this.myForm.get('name');
    control.setErrors({ customError: true });
  }
}