public function notify($event, $params)
    {
        $observers = $this->getObservers();

        if (isset($observers[$event])) {
            foreach ($observers[$event] as $observer) {
                $observer->setTriggeredEvent($event);
                $observer->setTriggeredEventParams($params);
                $observer->setBag($this->getBag());
                $observer->run();
           }
        }
    }