Gumdrop\FileHandler::listStaticFiles PHP Метод

    public function listStaticFiles()
    {
        $app = $this->app;
        $filter_callback = function ($item) use($app) {
            $item = ltrim(str_replace(realpath($app->getSourceLocation()), '', realpath($item)), DIRECTORY_SEPARATOR);
            $pathinfo = pathinfo($item);
            if ($item != 'conf.json' && strpos($item, '_layout') === false && (!isset($pathinfo['extension']) || $pathinfo['extension'] != 'md' && $pathinfo['extension'] != 'markdown' && $pathinfo['extension'] != 'twig')) {
                return $item;
            }
            return false;
        };
        return $this->listFiles($filter_callback);
    }