*/
package org.opendaylight.netvirt.cloudservicechain.listeners;
-import java.util.Optional;
import java.math.BigInteger;
import java.util.List;
-
+import java.util.Optional;
import javax.inject.Inject;
import javax.inject.Singleton;
-import org.opendaylight.mdsal.binding.api.DataBroker;
-import org.opendaylight.mdsal.common.api.ReadFailedException;
import org.opendaylight.genius.mdsalutil.NwConstants;
import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
+import org.opendaylight.mdsal.binding.api.DataBroker;
import org.opendaylight.netvirt.cloudservicechain.CloudServiceChainConstants;
import org.opendaylight.netvirt.cloudservicechain.VPNServiceChainHandler;
import org.opendaylight.netvirt.cloudservicechain.utils.VpnServiceChainUtils;