import static org.opendaylight.ovsdb.lib.operations.Operations.op;
-import com.google.common.base.Optional;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
-import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
+import java.util.Optional;
+import org.opendaylight.mdsal.binding.api.DataTreeModification;
import org.opendaylight.ovsdb.lib.notation.UUID;
import org.opendaylight.ovsdb.lib.operations.TransactionBuilder;
import org.opendaylight.ovsdb.schema.hardwarevtep.LogicalRouter;