Piwik\Plugins\SitesManager\API::renameGroup PHP Метод

    public function renameGroup($oldGroupName, $newGroupName)
    {
        Piwik::checkUserHasSuperUserAccess();
        if ($oldGroupName == $newGroupName) {
            return true;
        }
        $sitesHavingOldGroup = $this->getSitesFromGroup($oldGroupName);
        foreach ($sitesHavingOldGroup as $site) {
            $this->updateSite($site['idsite'], $siteName = null, $urls = null, $ecommerce = null, $siteSearch = null, $searchKeywordParameters = null, $searchCategoryParameters = null, $excludedIps = null, $excludedQueryParameters = null, $timezone = null, $currency = null, $newGroupName);
        }
        return true;
    }