"virtual", !item.isObserved(),
	)

	// "being deleted" is an one-way trip to the final deletion. We'll just wait for the final deletion, and then process the object's dependents.
	if item.isBeingDeleted() && !item.isDeletingDependents() {
		logger.V(5).Info("processing item returned at once, because its DeletionTimestamp is non-nil",
			"item", item.identity,
		)
		return nil
	}

	return !n.virtual
}

func (n *node) markDeletingDependents() {
	n.deletingDependentsLock.Lock()
	defer n.deletingDependentsLock.Unlock()
	n.deletingDependents = true
}

func (n *node) isDeletingDependents() bool {
	n.deletingDependentsLock.RLock()
	defer n.deletingDependentsLock.RUnlock()
	return n.deletingDependents
}

func (n *node) addDependent(dependent *node) {
	n.dependentsLock.Lock()

			for dep := range existingNode.dependents {
				gb.attemptToDelete.Add(dep)
			}
			for _, owner := range existingNode.owners {
				ownerNode, found := gb.uidToNode.Read(owner.UID)
				if !found || !ownerNode.isDeletingDependents() {
					continue
				}
				// this is to let attempToDeleteItem check if all the owner's
				// dependents are deleted, if so, the owner will be deleted.
				gb.attemptToDelete.Add(ownerNode)
			}
		}