Jarves\JarvesEventDispatcher::attachEvent PHP Method

    public function attachEvent(Event $event)
    {
        $fn = function (GenericEvent $genericEvent) use($event) {
            if ($this->isCallable($event, $genericEvent)) {
                $this->call($event, $genericEvent);
            }
        };
        $this->eventDispatcher->addListener($event->getKey(), $fn);
        $this->attachedEvents[] = ['key' => $event->getKey(), 'event' => $event, 'callback' => $fn];
    }