public static function drivers($sModule, $sSubType = ''): array
    {
        $aDrivers = static::filter('driver');
        $aOut     = [];

        foreach ($aDrivers as $oDriver) {
            if ($oDriver->forModule == $sModule) {
                if (!empty($sSubType) && $sSubType == $oDriver->subType) {
                    $aOut[] = $oDriver;
                } elseif (empty($sSubType)) {
                    $aOut[] = $oDriver;
                }
            }
        }

        return $aOut;
    }