Autodesk.Workspaces.NodeModelConverter.ReadJson C# (CSharp) Method

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            NodeModel node = null;

            var obj = JObject.Load(reader);
            var type = Type.GetType(obj["$type"].Value<string>());
            
            var guid = Guid.Parse(obj["Uuid"].Value<string>());
            var displayName = obj["DisplayName"].Value<string>();

            var inPorts = obj["InputPorts"].ToArray().Select(t => t.ToObject<PortModel>()).ToArray();
            var outPorts = obj["OutputPorts"].ToArray().Select(t => t.ToObject<PortModel>()).ToArray();

            var resolver = (IdReferenceResolver)serializer.ReferenceResolver;

            if (type == typeof(Function))
            {
                var functionId = Guid.Parse(obj["FunctionUuid"].Value<string>());
                node = manager.CreateCustomNodeInstance(functionId);
                RemapPorts(node, inPorts, outPorts, resolver);
            }
            else if(type == typeof(CodeBlockNodeModel))
            {
                var code = obj["Code"].Value<string>();
                node = new CodeBlockNodeModel(code, guid, 0.0, 0.0, libraryServices, ElementResolver);
                RemapPorts(node, inPorts, outPorts, resolver);
            }
            else if(typeof(DSFunctionBase).IsAssignableFrom(type))
            {
                var mangledName = obj["FunctionSignature"].Value<string>();

                var description = libraryServices.GetFunctionDescriptor(mangledName);

                if(type == typeof(DSVarArgFunction))
                {
                    node = new DSVarArgFunction(description);
                    // The node syncs with the function definition.
                    // Then we need to make the inport count correct
                    var varg = (DSVarArgFunction)node;
                    varg.VarInputController.SetNumInputs(inPorts.Count());
                }
                else if(type == typeof(DSFunction))
                {
                    node = new DSFunction(description);
                    
                }
                RemapPorts(node, inPorts, outPorts, resolver);
            }
            else if (type == typeof(DSVarArgFunction))
            {
                var functionId = Guid.Parse(obj["FunctionUuid"].Value<string>());
                node = manager.CreateCustomNodeInstance(functionId);
                RemapPorts(node, inPorts, outPorts, resolver);
            }
            else if(type == typeof(Formula))
            {
                node = (Formula)obj.ToObject(type);
                RemapPorts(node, inPorts, outPorts, resolver);
            }
            else
            {
                node = (NodeModel)obj.ToObject(type);
            }

            node.GUID = guid;
            node.NickName = displayName;
            //node.X = x;
            //node.Y = y;

            // Add references to the node and the ports to the reference resolver,
            // so that they are available for entities which are deserialized later.
            serializer.ReferenceResolver.AddReference(serializer.Context, node.GUID.ToString(), node);

            foreach(var p in node.InPorts)
            {
                serializer.ReferenceResolver.AddReference(serializer.Context, p.GUID.ToString(), p);
            }
            foreach (var p in node.OutPorts)
            {
                serializer.ReferenceResolver.AddReference(serializer.Context, p.GUID.ToString(), p);
            }
            return node;
        }