CIBlockDocumentWebdav::IsDocumentLocked

static function IsDocumentLocked($documentId, $workflowId)
{
	$documentId = intval($documentId);
	if ($documentId <= 0)
		throw new CBPArgumentNullException("documentId");

	$diskId = self::processGetDiskIdByDocId($documentId);
	if($diskId !== null)
	{
		return self::proxyToDisk(__FUNCTION__, array($diskId, $workflowId));
	}

	return parent::IsDocumentLocked($documentId, $workflowId);
}