public static void CreateReachSpec(IExportEntry startNode, bool createTwoWay, IExportEntry destinationNode, string reachSpecClass, ReachSpecSize size, PropertyCollection externalGUIDProperties = null)
        {
            IMEPackage   Pcc = startNode.FileRef;
            IExportEntry reachSpectoClone = Pcc.Exports.FirstOrDefault(x => x.ClassName == "ReachSpec");

            if (externalGUIDProperties != null) //EXTERNAL
            {
                //external node

                //Debug.WriteLine("Num Exports: " + pcc.Exports.Count);
                if (reachSpectoClone != null)
                {
                    IExportEntry outgoingSpec = reachSpectoClone.Clone();
                    Pcc.addExport(outgoingSpec);

                    IEntry reachSpecClassImp = GetEntryOrAddImport(Pcc, reachSpecClass); //new class type.

                    outgoingSpec.idxClass      = reachSpecClassImp.UIndex;
                    outgoingSpec.idxObjectName = reachSpecClassImp.idxObjectName;

                    var            properties            = outgoingSpec.GetProperties();
                    ObjectProperty outgoingSpecStartProp = properties.GetProp <ObjectProperty>("Start");                                                                   //START
                    StructProperty outgoingEndStructProp = properties.GetProp <StructProperty>("End");                                                                     //Embeds END
                    ObjectProperty outgoingSpecEndProp   = outgoingEndStructProp.Properties.GetProp <ObjectProperty>(SharedPathfinding.GetReachSpecEndName(outgoingSpec)); //END
                    outgoingSpecStartProp.Value = startNode.UIndex;
                    outgoingSpecEndProp.Value   = 0;
                    var endGuid = outgoingEndStructProp.GetProp <StructProperty>("Guid");
                    endGuid.Properties = externalGUIDProperties; //set the other guid values to our guid values

                    //Add to source node prop
                    ArrayProperty <ObjectProperty> PathList = startNode.GetProperty <ArrayProperty <ObjectProperty> >("PathList");
                    PathList.Add(new ObjectProperty(outgoingSpec.UIndex));
                    startNode.WriteProperty(PathList);
                    outgoingSpec.WriteProperties(properties);


                    //Write Spec Size
                    SharedPathfinding.SetReachSpecSize(outgoingSpec, size.SpecRadius, size.SpecHeight);

                    //Reindex reachspecs.
                    SharedPathfinding.ReindexMatchingObjects(outgoingSpec);
                }
            }
            else
            {
                //Debug.WriteLine("Source Node: " + startNode.Index);

                //Debug.WriteLine("Num Exports: " + pcc.Exports.Count);
                //int outgoingSpec = pcc.ExportCount;
                //int incomingSpec = pcc.ExportCount + 1;


                if (reachSpectoClone != null)
                {
                    IExportEntry outgoingSpec = reachSpectoClone.Clone();
                    Pcc.addExport(outgoingSpec);
                    IExportEntry incomingSpec = null;
                    if (createTwoWay)
                    {
                        incomingSpec = reachSpectoClone.Clone();
                        Pcc.addExport(incomingSpec);
                    }

                    IEntry reachSpecClassImp = GetEntryOrAddImport(Pcc, reachSpecClass); //new class type.

                    outgoingSpec.idxClass      = reachSpecClassImp.UIndex;
                    outgoingSpec.idxObjectName = reachSpecClassImp.idxObjectName;

                    var outgoingSpecProperties = outgoingSpec.GetProperties();
                    if (reachSpecClass == "Engine.SlotToSlotReachSpec")
                    {
                        outgoingSpecProperties.Add(new ByteProperty(1, "SpecDirection")); //We might need to find a way to support this edit
                    }

                    //Debug.WriteLine("Outgoing UIndex: " + outgoingSpecExp.UIndex);

                    ObjectProperty outgoingSpecStartProp = outgoingSpecProperties.GetProp <ObjectProperty>("Start");                                                       //START
                    StructProperty outgoingEndStructProp = outgoingSpecProperties.GetProp <StructProperty>("End");                                                         //Embeds END
                    ObjectProperty outgoingSpecEndProp   = outgoingEndStructProp.Properties.GetProp <ObjectProperty>(SharedPathfinding.GetReachSpecEndName(outgoingSpec)); //END
                    outgoingSpecStartProp.Value = startNode.UIndex;
                    outgoingSpecEndProp.Value   = destinationNode.UIndex;

                    //Add to source node prop
                    var PathList = startNode.GetProperty <ArrayProperty <ObjectProperty> >("PathList");
                    PathList.Add(new ObjectProperty(outgoingSpec.UIndex));
                    startNode.WriteProperty(PathList);

                    //Write Spec Size
                    SetReachSpecSize(outgoingSpecProperties, size.SpecRadius, size.SpecHeight);
                    outgoingSpec.WriteProperties(outgoingSpecProperties);

                    if (createTwoWay)
                    {
                        incomingSpec.idxClass      = reachSpecClassImp.UIndex;
                        incomingSpec.idxObjectName = reachSpecClassImp.idxObjectName;
                        var incomingSpecProperties = incomingSpec.GetProperties();
                        if (reachSpecClass == "Engine.SlotToSlotReachSpec")
                        {
                            incomingSpecProperties.Add(new ByteProperty(2, "SpecDirection"));
                        }

                        ObjectProperty incomingSpecStartProp = incomingSpecProperties.GetProp <ObjectProperty>("Start");                                                       //START
                        StructProperty incomingEndStructProp = incomingSpecProperties.GetProp <StructProperty>("End");                                                         //Embeds END
                        ObjectProperty incomingSpecEndProp   = incomingEndStructProp.Properties.GetProp <ObjectProperty>(SharedPathfinding.GetReachSpecEndName(incomingSpec)); //END

                        incomingSpecStartProp.Value = destinationNode.UIndex;                                                                                                  //Uindex
                        incomingSpecEndProp.Value   = startNode.UIndex;


                        //Add reachspec to destination node's path list (returning)
                        var DestPathList = destinationNode.GetProperty <ArrayProperty <ObjectProperty> >("PathList");
                        DestPathList.Add(new ObjectProperty(incomingSpec.UIndex));
                        destinationNode.WriteProperty(DestPathList);

                        //destNode.WriteProperty(DestPathList);
                        SetReachSpecSize(incomingSpecProperties, size.SpecRadius, size.SpecHeight);

                        incomingSpec.WriteProperties(incomingSpecProperties);
                    }

                    //Reindex reachspecs.
                    SharedPathfinding.ReindexMatchingObjects(outgoingSpec);
                }
            }
        }