import com.google.common.util.concurrent.ListenableFuture;
import java.util.List;
import java.util.concurrent.Callable;
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import org.opendaylight.genius.interfacemanager.globals.InterfaceInfo;
import org.opendaylight.netvirt.elan.utils.ElanUtils;
import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;