protected function _processOptions($aParams)
    {
        if (!is_array($aParams)) {
            $aParams = [];
        }

        if (!isset($aParams["oxfiles__oxdownloadexptime"]) || $aParams["oxfiles__oxdownloadexptime"] == "") {
            $aParams["oxfiles__oxdownloadexptime"] = -1;
        }
        if (!isset($aParams["oxfiles__oxlinkexptime"]) || $aParams["oxfiles__oxlinkexptime"] == "") {
            $aParams["oxfiles__oxlinkexptime"] = -1;
        }
        if (!isset($aParams["oxfiles__oxmaxunregdownloads"]) || $aParams["oxfiles__oxmaxunregdownloads"] == "") {
            $aParams["oxfiles__oxmaxunregdownloads"] = -1;
        }
        if (!isset($aParams["oxfiles__oxmaxdownloads"]) || $aParams["oxfiles__oxmaxdownloads"] == "") {
            $aParams["oxfiles__oxmaxdownloads"] = -1;
        }

        return $aParams;
    }