public function reorder($task_list_id, array $ids)
    {
        $task_list_id = (int) $task_list_id;
        if ($task_list_id <= 0) {
            throw new Exception('Invalid param task_list_id');
        }
        return $this->rest->post("todo_lists/$task_list_id/" .
                                                "$this->action/reorder", $ids);
    }