How to make copies of delivered class/function module.

Hello All,

Can anybody tell me how/where should I go, to make copies of delivered class "CL_HRMSS_RECRUITING_WF" and the function module "HRWPC_EREC_CREATE_EREC_OBJECT".

Also if I am renaming with Z<my-class-name>, and using the method "CREATENBOBJECT" in my renamed class, will there be a problem with naming conflicts as "CL_HRMSS_RECRUITING_WF" already has the same method "CREATENBOBJECT".

Kind Regards

Srinivas.