-import org.opendaylight.controller.sal.core.api.RpcProvisionRegistry;
-import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
+import org.opendaylight.controller.sal.core.api.notify.NotificationPublishService;
+import org.opendaylight.controller.sal.core.api.notify.NotificationService;
+import org.osgi.framework.ServiceReference;