void registerDataTreeChangeListener(final String topologyId, final NodeKey key) { LOG.debug("{}: Registering data tree change listener on node {}", id, key); dataChangeListenerRegistration = setup .getDataBroker() .registerDataTreeChangeListener( new DataTreeIdentifier<>( LogicalDatastoreType.OPERATIONAL, NetconfTopologyUtils.createTopologyNodeListPath(key, topologyId)), this); }