public static function tumblr(Url $url)
    {
        if (($value = $url->getQueryParameter('z'))) {
            return Url::create($value);
        }

        return $url;
    }
public static function tumblr(Url $url)
    {
        if (($value = $url->getQueryParameter('z'))) {
            return Url::create($value);
        }

        return $url;
    }
public static function tumblr ( Url $ url ) { if ( ( $ value = $ url -> getQueryParameter ( 'z' ) ) ) { return Url :: create ( $ value ) ; } return $ url ; }
Redirect the tumblr url

@param Url $url

@return Url
Redirect the tumblr url