public function newSiteAction(Site $site = null)
    {
        $sitePackages = $this->packageManager->getFilteredPackages('available', null, 'neos-site');
        $documentNodeTypes = $this->nodeTypeManager->getSubNodeTypes('Neos.Neos:Document', false);
        $this->view->assignMultiple([
            'sitePackages' => $sitePackages,
            'documentNodeTypes' => $documentNodeTypes,
            'site' => $site,
            'generatorServiceIsAvailable' => $this->packageManager->isPackageAvailable('Neos.SiteKickstarter')
        ]);
    }