public function checkDefaultJobs($queue = null)
    {
        $queue = $queue ?: QueuedJob::QUEUED;
        if (count($this->defaultJobs)) {
            $activeJobs = QueuedJobDescriptor::get()->filter(
                'JobStatus',
                [
                    QueuedJob::STATUS_NEW,
                    QueuedJob::STATUS_INIT,
                    QueuedJob::STATUS_RUN,
                    QueuedJob::STATUS_WAIT,
                    QueuedJob::STATUS_PAUSED,
                ]
            );
            foreach ($this->defaultJobs as $title => $jobConfig) {
                if (!isset($jobConfig['filter']) || !isset($jobConfig['type'])) {
                    $this->getLogger()->error(
                        "Default Job config: $title incorrectly set up. Please check the readme for examples",
                        [
                            'file' => __FILE__,
                            'line' => __LINE__,
                        ]
                    );
                    continue;
                }
                $job = $activeJobs->filter(array_merge(
                    ['Implementation' => $jobConfig['type']],
                    $jobConfig['filter']
                ));
                if (!$job->count()) {
                    $this->getLogger()->error(
                        "Default Job config: $title was missing from Queue",
                        [
                            'file' => __FILE__,
                            'line' => __LINE__,
                        ]
                    );
                    Email::create()
                        ->setTo(
                            isset($jobConfig['email'])
                                ? $jobConfig['email']
                                : Config::inst()->get(Email::class, 'queued_job_admin_email')
                        )
                        ->setFrom(Config::inst()->get(Email::class, 'admin_email'))
                        ->setSubject('Default Job "' . $title . '" missing')
                        ->setData($jobConfig)
                        ->addData('Title', $title)
                        ->addData('Site', Director::absoluteBaseURL())
                        ->setHTMLTemplate('QueuedJobsDefaultJob')
                        ->send();
                    if (isset($jobConfig['recreate']) && $jobConfig['recreate']) {
                        if (!array_key_exists('construct', $jobConfig)
                            || !isset($jobConfig['startDateFormat'])
                            || !isset($jobConfig['startTimeString'])
                        ) {
                            $this->getLogger()->error(
                                "Default Job config: $title incorrectly set up. Please check the readme for examples",
                                [
                                    'file' => __FILE__,
                                    'line' => __LINE__,
                                ]
                            );
                            continue;
                        }
                        QueuedJobService::singleton()->queueJob(
                            Injector::inst()->createWithArgs($jobConfig['type'], $jobConfig['construct']),
                            date($jobConfig['startDateFormat'], strtotime($jobConfig['startTimeString']))
                        );
                        $this->getLogger()->info(
                            "Default Job config: $title has been re-added to the Queue",
                            [
                                'file' => __FILE__,
                                'line' => __LINE__,
                            ]
                        );
                    }
                }
            }
        }
    }