not have a parent or its parent is
not an element.</p>
<h2>Other resources</h2><ul><li>
<p><a href="https://developer.mozilla.org/en-US/docs/Web/API/Node.parentElement">Node.parentElement</a> from
W3C.</p></li></ul>
      
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                  polymer_app_layout_template 0.1.0 api doc