public function copyConfig($source, $target)
    {

        if (substr($source, 0, 4) === "url:") {

            $source = "<url>".substr($source, 4)."</url>";

        }
        else {

            $source = "<{$source}/>";

        }

        if (substr($target, 0, 4) === "url:") {

            $target = "<url>".substr($target, 4)."</url>";

        }
        else {

            $target = "<{$target}/>";

        }

        $copyConfig = new SimpleXMLElement(
            "<copy-config>".
                "<source>{$source}</source>".
                "<target>{$target}</target>".
            "</copy-config>"
        );

        return $this->sendRPC($copyConfig->asXML());

    }