UUID reference1 = localScope.register(url1,
new HashMap<String, String>());
localScope.register(url2, new HashMap<String, String>());
localScope.setProperties(reference1, new HashMap<String, String>());
localScope.unregister(reference1);
ArgumentCaptor<ServiceEvent> eventCaptor = ArgumentCaptor.forClass(ServiceEvent.class);
verify(serviceListener, new Times(4)).serviceChanged(eventCaptor.capture());
List<ServiceEvent> events = eventCaptor.getAllValues();
assertNotNull(events);