public function deleteSiteAction(Site $site)
    {
        $this->siteService->pruneSite($site);
        $this->addFlashMessage('The site "%s" has been deleted.', 'Site deleted', Message::SEVERITY_OK, [htmlspecialchars($site->getName())], 1412372689);
        $this->unsetLastVisitedNodeAndRedirect('index');
    }