public function getCronjobs()
    {
        if (!$this->cronjobs) {
            $cronjobs = array();

            $results = $this->serviceLocator
                ->get('Application')
                ->getEventManager()
                ->trigger(__FUNCTION__, $this, array(
                        'cronjobs' => $cronjobs
                ));

            if ($results) {
                foreach ($results as $key => $cron) {
                    foreach ($cron as $id => $conf) {
                        $cronjobs[$id] = $conf;
                    }
                }
            }

            $this->setCronjobs($cronjobs);
        }

        return $this->cronjobs;
    }