Can anyone please explain how to get the invoked method name?

Hello,
If I understand correctly from reading the ksoap source files, is that 
on the kSOAP Servlet side, the name of the class to be called is in the 
URL found in the HttpServletRequest, while the method's name is found 
with SoapObject.getName().
My question is, what 's the use of ClassMap, and instanceMap then?
In addition to that, I need to have a rather complete urn for method's 
name. So did anyone work on a way to map a URN to a class + method?
Thanks for your help