ny other state the mechanism
 might have used.

 <p>
 This method is called in response to <a href="../../../../../servlet/http/HttpServletRequest.html#logout()"><code>HttpServletRequest.logout()</code></a> and gives the authentication mechanism
 the option to remove any state associated with an earlier established authenticated identity. For example, an
 authentication mechanism that stores state within a cookie can send remove that cookie here.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>reque