kubeRegistry.AppendWorkloadHandler(m.serviceEntryController.WorkloadInstanceHandler)
	}

	if configCluster && m.serviceEntryController != nil && features.EnableEnhancedResourceScoping {
		kubeRegistry.AppendNamespaceDiscoveryHandlers(m.serviceEntryController.NamespaceDiscoveryHandler)
	}

	// TODO implement deduping in aggregate registry to allow multiple k8s registries to handle WorkloadEntry

func (c *Controller) AppendWorkloadHandler(f func(*model.WorkloadInstance, model.Event)) {
	c.handlers.AppendWorkloadHandler(f)
}

// AppendNamespaceDiscoveryHandlers register handlers on namespace selected/deselected by discovery selectors change.
func (c *Controller) AppendNamespaceDiscoveryHandlers(f func(string, model.Event)) {
	c.namespaceDiscoveryHandlers = append(c.namespaceDiscoveryHandlers, f)
}