5BAEAAAAALAAAAAABAAEAAAICRAEAOw=="></span> <span>four</span></a><br>
<br>

<h1>heading with nested button with nested image</h1>
<h3 data-expectedlabel="heading button image button heading" data-testname="heading name from content for each child including nested button with nested image" class="ex">
  heading
  <button>
    button
    <img alt="image" src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==">
    button
  </button>
  heading
</h3>

<h1>heading with nested link