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