Async(ServletRequest, ServletResponse)</code></a>,
 and the request passed is an instance of HttpServletRequest, then the dispatch is to the URI returned by
 <a href="../../javax/servlet/http/HttpServletRequest.html#getRequestURI--"><code>HttpServletRequest.getRequestURI()</code></a>. Otherwise, the dispatch is to the URI of the request
 when it was last dispatched by the container.

 <p>
 The following sequence illustrates how this will work:
 
 <pre>
 <code>
 // REQUEST dispatch to /url/A
 AsyncContext ac