QCMagritte & Voyage?

All,

I'm currently trying to wrap my head around QCMagritte. So far it seems
to include most of what I need.

I'm not sure though how/where to integrate a persistency layer (i.e.
Voyage in this case). I'm either missing some place to activly take
control and do saving/upgrading or any callback when objects/collections
have been changed.

Any pointers or sample code?

Thanks,

Udo