App\Http\Controllers\Laralum\Laralum::downloadLink PHP Method

    public static function downloadLink($file_name)
    {
        $link = url('/');
        if (Laralum::isDocument($file_name)) {
            $document = Document::where('name', $file_name)->first();
            $link = route('Laralum::document_downloader', ['slug' => $document->slug]);
        }
        return $link;
    }