parent_brand is a registry hierarchy reference. New registry responses use
the parent brand's canonical domain when the parent has one; older rows may
still carry a portfolio-internal brand id from brand.json#/brands[].id.
Consumers that need ancestry should use RegistrySync.getAncestors() rather
than walking parent_brand directly.
Brand identity returned by the registry resolver.
parent_brandis a registry hierarchy reference. New registry responses use the parent brand's canonical domain when the parent has one; older rows may still carry a portfolio-internal brand id frombrand.json#/brands[].id. Consumers that need ancestry should useRegistrySync.getAncestors()rather than walkingparent_branddirectly.