/**
* Line feed; default value is last cell height
*
* @param null $h
* @return PdfDocument
*/
public function ln($h = null)
{
$page = $this->_pdfDocument->getPage();
$page->setX($page->getLeftMargin());
if ($h === null) {
$page->setY($page->getY() + $this->_lastH);
} else {
$page->setY($page->getY() + $h);
}
return $this->_pdfDocument;
}
