Neos\Neos\Controller\Module\Administration\SitesController::updateSiteAction PHP Method

    public function updateSiteAction(Site $site, $newSiteNodeName)
    {
        if ($site->getNodeName() !== $newSiteNodeName) {
            $oldSiteNodePath = NodePaths::addNodePathSegment(SiteService::SITES_ROOT_PATH, $site->getNodeName());
            $newSiteNodePath = NodePaths::addNodePathSegment(SiteService::SITES_ROOT_PATH, $newSiteNodeName);
            /** @var $workspace Workspace */
            foreach ($this->workspaceRepository->findAll() as $workspace) {
                $siteNode = $this->nodeDataRepository->findOneByPath($oldSiteNodePath, $workspace);
                if ($siteNode !== null) {
                    $siteNode->setPath($newSiteNodePath);
                }
            }
            $site->setNodeName($newSiteNodeName);
            $this->nodeDataRepository->persistEntities();
        }
        $this->siteRepository->update($site);
        $this->addFlashMessage('The site "%s" has been updated.', 'Update', null, array(htmlspecialchars($site->getName())), 1412371798);
        $this->unsetLastVisitedNodeAndRedirect('index');
    }