Neos\Flow\ResourceManagement\ResourceManager::shutdownObject PHP Method

    public function shutdownObject()
    {
        /** @var PersistentResource $resource */
        foreach ($this->resourceRepository->getAddedResources() as $resource) {
            if ($this->persistenceManager->isNewObject($resource)) {
                $this->deleteResource($resource, false);
            }
        }
    }