rtexprvalue. If <code>true</code>, this means the
 attribute can hold a request-time value.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>true if the attribute has been specified in the TLD as rtexprvalue</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="isRequired()">
<h3>isRequired</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">isRequired</span>()</div>
<div class="block">Whether this attrib