Neos\Media\Browser\Controller\Module\Management\AssetController::updateAssetResourceAction PHP Метод

    public function updateAssetResourceAction(AssetInterface $asset, PersistentResource $resource, array $options = [])
    {
        $sourceMediaType = MediaTypes::parseMediaType($asset->getMediaType());
        $replacementMediaType = MediaTypes::parseMediaType($resource->getMediaType());
        // Prevent replacement of image, audio and video by a different mimetype because of possible rendering issues.
        if (in_array($sourceMediaType['type'], ['image', 'audio', 'video']) && $sourceMediaType['type'] !== $replacementMediaType['type']) {
            $this->addFlashMessage('Resources of type "%s" can only be replaced by a similar resource. Got type "%s"', '', Message::SEVERITY_WARNING, [$sourceMediaType['type'], $resource->getMediaType()], 1462308179);
            $this->redirect('index');
        }
        parent::updateAssetResourceAction($asset, $resource, $options);
    }