t have a value that is a string literal that is,
 or an EL Expression that evaluates to, a set of
 space-separated tokens representing the various WAI-ARIA roles
 that the element belongs to.
 </p>
 
 <p class="changed_added_2_2">It is the page author's
 responsibility to ensure that the user agent is capable of
 correctly interpreting the value of this attribute.</p></dd>
</dl>
</li>
</ul>
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<h4>setRole</h4>
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