public function getPlaylistVideoFeed($location)
    {
        if ($location instanceof Zend_Gdata_Query) {
            $uri = $location->getQueryUrl($this->getMajorProtocolVersion());
        } else {
            $uri = $location;
        }
        return parent::getFeed($uri, 'Zend_Gdata_YouTube_PlaylistVideoFeed');
    }