protected static function checkAlias($module) {
        // $module alias not called
        if (array_key_exists($module, static::getConfig('modules')))
            return $module;

        // check module alias
        foreach (static::getConfig('modules') as $cModule => $moduleOptions) {
            if (!array_key_exists('alias', $moduleOptions))
                continue;

            if ($moduleOptions['alias'] === Util::camelToHyphen($module))
                return $cModule;
        }

        // module nor alias found
        return $module;
    }