*/ abstract class AbEventSubscriber implements EventSubscriberInterface { protected static int $priority = 0; public static function getSubscribedEvents() { return [ AbTestEvent::INIT_EVENT => ['onInit', self::$priority], AbTestEvent::RUN_EVENT => ['onRun', self::$priority], ]; } public function onInit(AbTestEvent $event) { } public function onRun(AbTestEvent $event) { } }