public function parse(string $list)
    {
        if (!$list) {
            return $list;
        }

        $list = collect(explode(',', $list));

        return $list->map(function ($item) {
            $parts = explode(':', $item);
            $model = app()->make(config('mentions.pools.'.$parts[0].'.model'));
            return $model::findOrFail($parts[1]);
        });
    }