[Users] Overlapping AVPs

[Andreas Granig]

Hi Bogdan,

> maybe more appropriate than "groups" will be "classes" of avp. you can 
> group different AVP in a class to be able to perform more complex 
> identification/searches (like same AVPs as ID, but onebelongs to caller 
> and other to callee).

That's exactly what I'm looking for, but I can't find HOW to actually do 
that. Is this already possible? If so, how would such a class definition 
for an AVP look like in the config? Any links to some docs or maybe an 
example?

Thanks,
Andy