CIBlockDocumentWebdav::UpdateDocument

static function UpdateDocument($documentId, $arFields)
{
	$diskId = self::processGetDiskIdByDocId((int)$documentId);
	if($diskId !== null)
	{
		return self::proxyToDisk(__FUNCTION__, array($diskId, $arFields));
	}
	return parent::UpdateDocument($documentId, $arFields);
}