protected function registerNotificationSerializers()
    {
        $blueprints = [];
        $serializers = [
            'discussionRenamed' => BasicDiscussionSerializer::class
        ];

        $this->app->make('events')->fire(
            new ConfigureNotificationTypes($blueprints, $serializers)
        );

        foreach ($serializers as $type => $serializer) {
            NotificationSerializer::setSubjectSerializer($type, $serializer);
        }
    }