type Group
import bend-kit-camber@0.15.0.1/camber.bend as Camberimport Base
456# Policies are prepared Data, not callbacks. Later lifecycle stages can consume
457# these root-to-route declarations without splitting patterns or finding groups.
458type Group<-P: Data> is Data:
459 Group{id: U32, ancestors: List<&2, U32>, policy: P}