+
+ DOMDataTreeChangeService dataTreeChangeService = mock(DOMDataTreeChangeService.class);
+ doReturn(mock(ListenerRegistration.class)).when(dataTreeChangeService)
+ .registerDataTreeChangeListener(any(), any());
+
+ doReturn(Collections.singletonMap(DOMDataTreeChangeService.class, dataTreeChangeService))
+ .when(dataBroker).getSupportedExtensions();
+