protected function extractNodeType($targetType, array $source)
{
if (isset($source['__nodeType'])) {
$nodeTypeName = $source['__nodeType'];
} else {
$matches = array();
preg_match(self::EXTRACT_CONTENT_TYPE_PATTERN, $targetType, $matches);
if (isset($matches['nodeType'])) {
$nodeTypeName = $matches['nodeType'];
} else {
$nodeTypeName = 'unstructured';
}
}
return $this->nodeTypeManager->getNodeType($nodeTypeName);
}