How to add Proxy in Ax 2012 ?

Hi All

I have a  class in which i defined  a method.That method i want to call from enterprise portal using visual studio 2010

In ax2009  i used to Web-Static files->Proxies->add the class and method

then visual studio->Generate Proxies-

I 've gone through MSDN but it didn't help me much.Only i got to know that i have to create One Class Library Project.After that ...am not finding anything to do...

Please suggest me taking one example in ax 2012