public function addNewContent($text, $renderer)
    {
        $sortorder = $this->getContents()->count();

        $newContent = new Content;
        $newContent->setContent($text);
        $newContent->setRenderer($renderer);
        $newContent->generatePermid();
        $newContent->setSortorder(++$sortorder);

        $newContent->setSection($this);
        $this->addContent($newContent);

        return $newContent;
    }