Opc.Ua.Com.Server.ComHdaProxy.GetAggregateFunctionsObjectId C# (CSharp) Method

        private NodeId GetAggregateFunctionsObjectId(Session session)
        {
            // build the list of browse paths to follow by parsing the relative paths.
            BrowsePathCollection browsePaths = m_mapper.GetRemoteBrowsePaths(
                Opc.Ua.ObjectIds.Server_ServerCapabilities,
                "/HistoryServerCapabilities/AggregateFunctions");

            // make the call to the server.
            BrowsePathResultCollection results;
            DiagnosticInfoCollection diagnosticInfos;

            ResponseHeader responseHeader = session.TranslateBrowsePathsToNodeIds(
                null,
                browsePaths,
                out results,
                out diagnosticInfos);

            // ensure that the server returned valid results.
            Session.ValidateResponse(results, browsePaths);
            Session.ValidateDiagnosticInfos(diagnosticInfos, browsePaths);

            NodeId aggregateFunctionsNodeId = Opc.Ua.ObjectIds.Server_ServerCapabilities_AggregateFunctions; 

            for (int ii = 0; ii < results.Count; ii++)
            {
                // check if the start node actually exists.
                if (StatusCode.IsBad(results[ii].StatusCode))
                {
                    Utils.Trace("HistoryServer does not provide the ServerCapabilities object.");
                    continue;
                }

                // an empty list is returned if no node was found.
                if (results[ii].Targets.Count == 0)
                {
                    Utils.Trace("HistoryServer does not provide the AggregateFunctions folder.");
                    continue;
                }

                // Multiple matches are possible, however, the node that matches the type model is the
                // one we are interested in here. The rest can be ignored.
                BrowsePathTarget target = results[ii].Targets[0];

                if (target.RemainingPathIndex != UInt32.MaxValue || target.TargetId.IsAbsolute)
                {
                    Utils.Trace("HistoryServer does not provide the AggregateFunctions folder.");
                    continue;
                }

                // convert to a local node.
                aggregateFunctionsNodeId = ExpandedNodeId.ToNodeId(target.TargetId, session.NamespaceUris);
            }

            return aggregateFunctionsNodeId;
        }