How to get the standard code on 7.30

Hi,

I would like to get the worksetmap class from the package com.sap.portal.navigation.worksetmap to implement a slightly different one. Searching through System infomration, I found this class to be in the EP-RUNTIME SCA. But when I look into the EP-RUNTIME I have in Development Infrastructure, I can't get any workset.

I found a worksetmap.war file on the portal file system, but it contains no .java class.

In 7.30 how do you get the standard code ?

Regards,

Johann