 <div></div>
  </div>
</div>

<div role="listbox" aria-label="foo">
  <div role="group" id="listbox-group-2" class="fail">
    <div></div>
    <div role="option" aria-label="bar"></div>
  </div>
</div>

<div role="listbox" aria-label="foo">
  <div role="group" id="listbox-group-3" class="fail">
    <h1></h1>
  </div>
</div>

<div role="listbox" aria-label="foo">
  <div role="group" id="listbox-group-4" class="fail">
    <ul>
      <li role="option" aria-label="bar"></li>
    </ul>
  </div>
</div>

<div role