public function url($url, $title = null)
    {
        $this->url = $url;
        $this->urlTitle = $title;

        return $this;
    }
public function url($url, $title = null)
    {
        $this->url = $url;
        $this->urlTitle = $title;

        return $this;
    }
public function url ( $ url , $ title = null ) { $ this -> url = $ url ; $ this -> urlTitle = $ title ; return $ this ; }
Set a supplementary url for the Pushover message.

@param  string $url
@param  string $title
@return $this
Set a supplementary url for the Pushover message .