CL_VirtualCallback_2_member_user< RetVal, Param1, Param2, InstanceClass, UserData >::CL_VirtualCallback_2_member_user( InstanceClass * instance, RetVal(InstanceClass::*)(Param1, Param2, UserData, CL_Super_2 < RetVal, Param1, Param2 > &) member_func, const UserData & user_data);