Is it possible to limit results of an entity in a join?

[hks1]

I have a data model wherein classA has a one-to-many relationship with classB.
When I query classA by ID, I want to limit the classB results in the response.

e.g. lets say classA is a Customer class and classB is an Order class and I want to pull only last 6 (configurable) orders or so instead of lets say the whole history of last 5 years, or whatever is stored.

Right now I get the whole list.