Automaticially add parent document for collection fresh collection items

[ElectricMaxxx]

I do not like Exceptions like that:

IdException: Property "parentDocument" mapped as ParentDocument may not be empty in document of class "..\Document\Category"

So i would like to add a listener to automaticiall add them.

Just for the one, where we know the docuement - parent path relation or can map them in a simple configuration.