public function duplicate($LinodeID, $DatacenterID, $PlanID, $PaymentTerm = null)
    {
        return $this->call('linode.clone', [
            'LinodeID'     => $LinodeID,
            'DatacenterID' => $DatacenterID,
            'PlanID'       => $PlanID,
            'PaymentTerm'  => $PaymentTerm,
        ]);
    }