public function create($orientation = null, $format = null, $lang = null, $unicode = null, $encoding = null, $margin = null)
    {
        return new Html2Pdf(
            $orientation ? $orientation : $this->orientation,
            $format ? $format : $this->format,
            $lang ? $lang : $this->lang,
            $unicode ? $unicode : $this->unicode,
            $encoding ? $encoding : $this->encoding,
            $margin ? $margin : $this->margin
        );
    }