tialized AsyncContext</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalStateException</a></code> - if the request is within the scope of a filter or servlet that does not support
 asynchronous operations (that is, <a href="#isAsyncSupported()"><code>isAsyncSupported()</code></a> returns false), or if t