title: Catch control.setValue action on Storybook (Angular)
body: <p>The issue is for Angular 9 although the question should be valid for any case.</p>
  <p>I have a component that looks more or less as the following:</p>
  <pre><code>export class MyComponent {
    @Input() config: Config;
    @Input() control: FormControl;
  };
  </code></pre>
  <p>And function inside the component that do several steps and ends with a this.control.setValue(value);</p>
  <p>I want to catch the function using the addon-actions but I was unable to do that since I cant found a way of how to capture the nested event.</p>
  <p>I usually do:</p>
  <pre><code>export const Default: Story&lt;MyComponent &gt; = TEMPLATE.bind({});
  FormattersDe.args = {
    config: {
       ...
    },
    control: new FormControl()
  };
  </code></pre>
  <p>But of course there is no action catched, I also try with:</p>
  <pre><code>export const Default: Story&lt;MyComponent &gt; = TEMPLATE.bind({});
  FormattersDe.args = {
    config: {
       ...
    },
    control: MOCKED_CONTROL
  };
  const MOCKED_CONTROL = {
     ...new FormControl(),
     setValue: action.setValue
  }
  </code></pre>
  <p>But it seems since is not on the first level there is no capture there.</p>