public static function remove($id)
    {
        $asset = self::find($id)->first();
        $media = $asset->media;

        foreach ($media as $file) {
            if (! is_file(public_path($file->getUrl())) || ! is_writable(public_path($file->getUrl()))) {
                return;
            }
        }

        $asset->delete();
    }