// current is state after applying all of the changes.
type serviceChange struct {
	previous ServicePortMap
	current  ServicePortMap
}

// NewServiceChangeTracker initializes a ServiceChangeTracker
func NewServiceChangeTracker(makeServiceInfo makeServicePortFunc, ipFamily v1.IPFamily, recorder events.EventRecorder, processServiceMapChange processServiceMapChangeFunc) *ServiceChangeTracker {
	return &ServiceChangeTracker{

	// provide our own implementation of that interface, or else use a
	// proxy.ServiceChangeTracker to construct them and fill in the map for us.

	sct := proxy.NewServiceChangeTracker(nil, v1.IPv4Protocol, nil, nil)
	svc := &v1.Service{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "cleanup-test",
			Namespace: "test",
		},
		Spec: v1.ServiceSpec{
			ClusterIP:   testClusterIP,