//happen later.
	if txn, err := al.txnAllocClusterIPs(service, dryRun); err != nil {
		return nil, err
	} else {
		result = append(result, txn)
	}

	// Allocate ports
	if txn, err := al.txnAllocNodePorts(service, dryRun); err != nil {
		return nil, err
	} else {
		result = append(result, txn)
	}

	success = true
	return result, nil
}

	// defaulting) because it needs to be aware of flags and be able to access
	// API storage.
	txn, err := r.alloc.allocateCreate(svc, dryrun.IsDryRun(options.DryRun))
	if err != nil {
		return nil, err
	}

	// Our cleanup callback
	finish := func(_ context.Context, success bool) {
		if success {
			txn.Commit()
		} else {
			txn.Revert()
		}
	}

	return finish, nil
}

	startTime := time.Now()
	txnResp, err := s.client.KV.Txn(ctx).If(
		notFound(preparedKey),
	).Then(
		clientv3.OpPut(preparedKey, string(newData), opts...),
	).Commit()
	metrics.RecordEtcdRequest("create", s.groupResourceString, err, startTime)
	if err != nil {
		span.AddEvent("Txn call failed", attribute.String("err", err.Error()))
		return err
	}
	span.AddEvent("Txn call succeeded")

	if !txnResp.Succeeded {