Dynamo.Graph.Workspaces.WorkspaceModel.SerializeSessionData C# (CSharp) Method

        protected virtual void SerializeSessionData(XmlDocument document, ProtoCore.RuntimeCore runtimeCore)
        {
            if (document.DocumentElement == null)
            {
                const string message = "Workspace should have been saved before this";
                throw new InvalidOperationException(message);
            }

            try
            {
                if (runtimeCore == null) // No execution yet as of this point.
                    return;

                // Selecting all nodes that are either a DSFunction,
                // a DSVarArgFunction or a CodeBlockNodeModel into a list.
                var nodeGuids =
                    Nodes.Where(
                        n => n is DSFunction || n is DSVarArgFunction || n is CodeBlockNodeModel || n is Function)
                        .Select(n => n.GUID);

                var nodeTraceDataList = runtimeCore.RuntimeData.GetTraceDataForNodes(nodeGuids, runtimeCore.DSExecutable);

                if (nodeTraceDataList.Any())
                    Utils.SaveTraceDataToXmlDocument(document, nodeTraceDataList);
            }
            catch (Exception exception)
            {
                // We'd prefer file saving process to not crash Dynamo,
                // otherwise user will lose the last hope in retaining data.
                Log(exception.Message);
                Log(exception.StackTrace);
            }
        }