func (p *tagWatcher) notifyHandlers() {
	myTags := p.GetMyTags()
	for _, handler := range p.handlers {
		handler(myTags)
	}
}

func isTagWebhook(uobj any) bool {
	obj := controllers.ExtractObject(uobj)
	if obj == nil {
		return false
	}
	_, ok := obj.GetLabels()[IstioTagLabel]
	return ok
}

func (cl *Client) inRevision(obj any) bool {
	object := controllers.ExtractObject(obj)
	if object == nil {
		return false
	}
	return config.LabelsInRevision(object.GetLabels(), cl.revision)
}

func (cl *Client) onEvent(resourceGVK config.GroupVersionKind, old controllers.Object, curr controllers.Object, event model.Event) {
	currItem := controllers.ExtractObject(curr)
	if currItem == nil {
		return
	}

	return d.discoveryNamespaces.Contains(ns)
}

func extractObjectNamespace(obj any) (string, bool) {
	if ns, ok := obj.(string); ok {
		return ns, true
	}
	object := controllers.ExtractObject(obj)
	if object == nil {
		// When an object is deleted, obj could be a DeletionFinalStateUnknown marker item.
		return "", false
	}
	if _, ok := object.(*corev1.Namespace); ok {
		return object.GetName(), true