thentication 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>Specified by:</dt>
<dd><code><a href="HttpAuthenticationMechanism.html#cleanSubject(jakarta.servlet.http.HttpServletRequest,jakarta.servlet.http.HttpServletResponse,jakarta.security.enterprise.authentication.mechanism.http.HttpMessageContext)">cleanSubjec