ret = append(ret, dep)
			}
		}
	}
	return ret
}

// ownerReferenceCoordinates returns an owner reference containing only the coordinate fields
// from the input reference (uid, name, kind, apiVersion)
func ownerReferenceCoordinates(ref metav1.OwnerReference) metav1.OwnerReference {
	return metav1.OwnerReference{
		UID:        ref.UID,
		Name:       ref.Name,

		if !ok {
			// Create a "virtual" node in the graph for the owner if it doesn't
			// exist in the graph yet.
			ownerNode = &node{
				identity: objectReference{
					OwnerReference: ownerReferenceCoordinates(owner),
					Namespace:      n.identity.Namespace,
				},
				dependents: make(map[*node]struct{}),
				virtual:    true,
			}
			logger.V(5).Info("add virtual item", "identity", ownerNode.identity)

	dangling bool, owner *metav1.PartialObjectMetadata, err error) {

	logger := klog.FromContext(ctx)
	// check for recorded absent cluster-scoped parent
	absentOwnerCacheKey := objectReference{OwnerReference: ownerReferenceCoordinates(reference)}
	if gc.absentOwnerCache.Has(absentOwnerCacheKey) {
		logger.V(5).Info("according to the absentOwnerCache, item's owner does not exist",
			"item", item.identity,
			"owner", reference,
		)