title: Angular FormControl check if required
body: <p>Is there a way to check whether control is required?</p>
  
  <p>The problem arose when I implemented a dedicated form field component which accepts <code>FormControl</code> and has not only <code>input</code> but also validation errors. Since some field are required it's good to let the user know if it's required by <code>*</code>.</p>
  
  <p>Is there a way to check the <code>@Input() control: FormControl</code> for <code>Validators.required</code> and display an asterisk?</p>