alidated application request message. The
 runtime will bind a validated application message into the the corresponding service invocation.
 
 <p>
 This method conveys the outcome of its message processing either by returning an AuthStatus value or by throwing an
 AuthException.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>messageInfo</code> - A contextual object that encapsulates the client request and server response objects, and that may
 be used to save state across a sequen