Neos\Media\Browser\Controller\AssetController::tagAssetAction PHP Метод

    public function tagAssetAction(Asset $asset, Tag $tag)
    {
        $success = false;
        if ($asset->addTag($tag)) {
            $this->assetRepository->update($asset);
            $success = true;
        }
        $this->view->assign('value', $success);
    }