public function getVideoCommentFeedUrl()
    {
        $commentsExtension = $this->getComments();
        $commentsFeedUrl = null;
        if ($commentsExtension) {
            $commentsFeedLink = $commentsExtension->getFeedLink();
            if ($commentsFeedLink) {
                $commentsFeedUrl = $commentsFeedLink->getHref();
            }
        }
        return $commentsFeedUrl;
    }