import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
import org.opendaylight.controller.cluster.datastore.utils.MutableUnsignedLongSet;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
+import org.opendaylight.yangtools.yang.data.tree.api.DataTreeModification;
/**
* Chained transaction specialization of {@link AbstractFrontendHistory}. It prevents concurrent open transactions.