c := cc.(internalCollection[I])
	h := &manyCollection[I, O]{
		transformation:         hf,
		collectionName:         opts.name,
		id:                     nextUID(),
		log:                    log.WithLabels("owner", opts.name),
		parent:                 c,
		collectionDependencies: sets.New[collectionUID](),
		objectDependencies:     map[Key[I]][]*dependency{},