protected function getMetaFromFormatNode(\DOMNode $formatNode)
{
$meta = ['title' => []];
foreach ($this->xpath->query('x:meta/x:title', $formatNode) as $formatTitleNode) {
$language = $this->xpath->query('@lang', $formatTitleNode)->item(0)->nodeValue;
$meta['title'][$language] = $formatTitleNode->nodeValue;
}
return $meta;
}