What is ajax response direct, where is the code?

WicketAjaxRequestErrorRedirect.txt

POST /life/launch/?wicket: interface=:23:navigationPanel:nextLink::IActivePageBehaviorListener:1:-1&wicket:ignoreIfNotActive=true&random=0.006311339758800216 HTTP/1.1
Accept: text/xml
Accept-Language: en-us
wicket-ajax: true
Referer: https://mysite/life/launch/
wicket-focusedelementid: idc96
Content-Type: application/x-www-form-urlencoded
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30)
Host: mysite
Content-Length: 457
Connection: Keep-Alive
Cache-Control: no-cache

idc9e_hf_0=&firstName=SPOUSE

HTTP/1.1 200 OK
Date: Wed, 13 Apr 2011 19:24:37 GMT
Server: IBM_HTTP_Server
Ajax-Location: ?wicket:bookmarkablePage=:theapplife.errors.LifeErrorPage
Content-Length: 121
Keep-Alive: timeout=10, max=97
Connection: Keep-Alive
Content-Type: text/xml
Content-Language: en-US

<ajax-response><redirect>?wicket:bookmarkablePage=:theapplife.errors.LifeErrorPage</redirect></ajax-response>