final DOMDataTreeWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
writeTx.put(LogicalDatastoreType.CONFIGURATION, CarsModel.BASE_PATH, CarsModel.emptyContainer());
writeTx.put(LogicalDatastoreType.CONFIGURATION, CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
final DOMDataTreeWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
writeTx.put(LogicalDatastoreType.CONFIGURATION, CarsModel.BASE_PATH, CarsModel.emptyContainer());
writeTx.put(LogicalDatastoreType.CONFIGURATION, CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());