Contao\PageRoot::getNextPage PHP Метод

    protected function getNextPage($rootPageId)
    {
        $objNextPage = \PageModel::findFirstPublishedByPid($rootPageId);
        // No published pages yet
        if (null === $objNextPage) {
            $this->log('No active page found under root page "' . $rootPageId . '")', __METHOD__, TL_ERROR);
            throw new NoActivePageFoundException('No active page found under root page.');
        }
        return $objNextPage;
    }