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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>&lt;div&gt; with role button; supported state or property "aria-expanded" value of "undefined"</title>
</head>
<body>
<div id="test" role="button" aria-expanded="undefined">Placeholder content</div>
<div id="obj1">obj1</div>
<div id="obj2">obj2</div>
</body>
</html>