public function kickJob($id)
    {
        $this->_write(sprintf('kick-job %d', $id));
        $status = strtok($this->_read(), ' ');

        switch ($status) {
            case 'KICKED':
                return true;
            case 'NOT_FOUND':
                return false;
            default:
                throw new ServerException('Kick error: '.$status);
        }
    }