public function load(LoadResourceEvent $event)
    {
        $resourceNode = $event->getResourceNode();

        /** @var Wiki $wiki */
        $wiki = $event->getResource();
        $sectionTree = $this->sectionManager->getSerializedSectionTree(
            $wiki,
            $this->tokenStorage->getToken()->getUser() instanceof User ? $this->tokenStorage->getToken()->getUser() : null,
            $this->checkPermission('EDIT', $resourceNode)
        );

        $event->setData([
            'wiki' => $this->serializer->serialize($wiki),
            'sections' => $sectionTree,
        ]);

        $event->stopPropagation();
    }