public function setPageOrientation(string $orientation): PdfInterface
    {
        $this->setProperty('pageOrientation', strtoupper($orientation[0]));

        $this->pageOrientation === 'L'
            ? $this->setProperty('pageFormat', $this->pageSize . '-' . $this->pageOrientation)
            : $this->setProperty('pageFormat', $this->pageSize);

        return $this;
    }