Cron\Report\CronReport::isSuccessful PHP Method

    public function isSuccessful()
    {
        foreach ($this->getReports() as $report) {
            if (is_null($report->isSuccessful())) {
                return null;
            }
            if (false === $report->isSuccessful()) {
                return false;
            }
        }
        return true;
    }