e target of the FORWARD
 // dispatch
 ac = request.startAsync(request,response);
 ...
 ac.dispatch(); // ASYNC dispatch to /url/B
 </code>
 </pre>

 <p>
 This method returns immediately after passing the request and response objects to a container managed thread, on
 which the dispatch operation will be performed. If this method is called before the container-initiated dispatch
 that called <tt>startAsync</tt> has returned to the container, the dispatch operation will be delayed until after
 the container-i