java/javase/17/docs/api/java.base/java/lang/IllegalStateException.html" title="class or interface in java.lang" class="external-link">IllegalStateException</a></code> - if <a href="#isTypeVariable()"><code>isTypeVariable()</code></a> returns <code>false</code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="asWildcardType()">
<h3>asWildcardType</h3>
<div class="member-signature"><span class="modifiers">default</span>&nbsp;<span class="return-type"><a href="WildcardType.html" title="interface in