src/CronHelper/Service/CronService.php
public function setSuccessLogLifetime($time)
    {
        if (!is_numeric($time)) {
            throw new \InvalidArgumentException('`successLogLifetime` expects integer value!');
        }

        $this->options['successLogLifetime'] = (int) $time;
        return $this;
    }
public function setSuccessLogLifetime($time)
    {
        if (!is_numeric($time)) {
            throw new \InvalidArgumentException('`successLogLifetime` expects integer value!');
        }

        $this->options['successLogLifetime'] = (int) $time;
        return $this;
    }
Set time in minutes for how long to keep records about successfully
completed CRON jobs.

@param integer $time
@return CronService