Hi

I have following relation

A -> B (with filter)
A -> C -> A -> B (with filter)

and I want to load this in one query

session.Query(A).join(A.b, and_(A.id == B.parent_id, B.field == 123)).
options(contains_eager(A.b), joinedload(A.c).joinedload(C.a).joinedload(A.b
))

how could I provide custom join for second load of A.b with filter (same as 
first one)

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