type Lens
import bendvy-ecs-core@0.1.0.3/owner_product.bend as OwnerProductimport Base
25# Canonical setup composes these fields; user systems only receive opaque caps.
26type Lens<-Whole:Type,-Part:Type,-Rest:Type> is Type:
27 Lens{take:Whole -> Rest & Part,put:Rest -> Part -> Whole}