*/
package org.opendaylight.netvirt.cloudservicechain;
-import com.google.common.base.Optional;
+import java.util.Optional;
import java.math.BigInteger;
import java.util.Collection;
import java.util.List;
import javax.inject.Inject;
import javax.inject.Singleton;
-import org.opendaylight.controller.md.sal.binding.api.DataBroker;
-import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.mdsal.binding.api.DataBroker;
+import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
import org.opendaylight.genius.mdsalutil.MDSALUtil;
import org.opendaylight.genius.mdsalutil.NWUtil;
import org.opendaylight.genius.mdsalutil.NwConstants;