public function getAds()
    {
        $ads = array();

        $this->node->filter('[itemtype="http://schema.org/Offer"]')
            ->each(function ($node) use (&$ads) {
                $ad = (new SearchResultAdCrawler(
                    $node,
                    $node->filter('a')->attr('href')
                ))->getAll();

                $ads [$ad['id']] = $ad;
            });

        return $ads;
    }