private function SaveParams(PageUrl $pageUrl)
    {
        $this->ClearParams($pageUrl);
        $params = $this->serializer->LinesToArray($this->Value('Params'));
        $prev = null;
        foreach ($params as $name => $value) {
            $param = new PageUrlParameter();
            $param->SetPageUrl($pageUrl);
            $param->SetPrevious($prev);
            $param->SetName($name);
            $param->SetValue($value);
            $param->Save();
            $prev = $param;
        }
    }