        return cron_utils.cronify(""crontab -l | {{ cat; echo \""{} {} {} {} {} CJOBID='{}' MAILTO='' {}\""; }} | crontab - > /dev/null"".format(self._minute, self._hour, self._day_of_month, self._month_of_year, self._day_of_week, self._jobid, self._command))"