import java.util.Arrays;
import java.util.List;
import java.util.TreeMap;
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import org.opendaylight.transportpce.common.NetworkUtils;
import org.opendaylight.transportpce.pce.constraints.PceConstraints;
import org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev181130.Link1;