public void set_Node(string authTocken, long node_id, Metadata metadata) { DocumentManagementClient docManClient = new DocumentManagementClient(); CWS.DocumentManagement.OTAuthentication otAuthDocManger = new CWS.DocumentManagement.OTAuthentication(); otAuthDocManger.AuthenticationToken = authTocken; try { docManClient.SetNodeMetadata(ref otAuthDocManger, node_id, metadata); } catch (FaultException e) { Console.WriteLine(e.Message); } finally { docManClient.Close(); } }