title: How to set name for FormGroup?
body: <p>I need to set unique name for FormGroup:</p>
  
  <pre><code>let controls = {};
  let formName = "Form1";
  const form = new FormGroup(controls);
  </code></pre>
  
  <p>How to set name <code>formName</code> for <code>new FormGroup</code>?</p>