private static byte[] ReadIfcFileAjesStyle(string ifcFilename) {
            List<Vector3[]> vecs = new List<Vector3[]>();
            List<int[]> trises = new List<int[]>();
            List<string> types = new List<string>();
            using (var model2 = IfcStore.Open(ifcFilename)) {
                if (model2.GeometryStore.IsEmpty) {
                    Console.WriteLine("model.GeometryStore.IsEmpty");
                    var context = new Xbim3DModelContext(model2);
                    context.CreateContext();//skal køre for at virke..
                }
                XbimModelPositioningCollection modelPositions = new XbimModelPositioningCollection();
                short userDefinedId = 0;
                model2.UserDefinedId = userDefinedId;
                modelPositions.AddModel(model2.ReferencingModel);
                if (model2.IsFederation) {
                    foreach (IReferencedModel refModel in model2.ReferencedModels) {
                        refModel.Model.UserDefinedId = ++userDefinedId;
                        IfcStore v = refModel.Model as IfcStore;
                        if (v != null)
                            modelPositions.AddModel(v.ReferencingModel);
                    }
                }
                XbimRect3D modelBounds = modelPositions.GetEnvelopeInMeters();
                XbimPoint3D p = modelBounds.Centroid();
                XbimVector3D modelTranslation = new XbimVector3D(-p.X, -p.Y, -p.Z);
                double oneMeter = model2.ModelFactors.OneMetre;
                XbimMatrix3D translation = XbimMatrix3D.CreateTranslation(modelTranslation * oneMeter);
                XbimMatrix3D scaling = XbimMatrix3D.CreateScale(1 / oneMeter);
                XbimMatrix3D transform = translation * scaling;
                WpfMaterial mat = new WpfMaterial();
                Color SelectionColor = Colors.Blue;
                mat.CreateMaterial(new XbimColour("Selection", SelectionColor.ScR, SelectionColor.ScG, SelectionColor.ScB, SelectionColor.ScA));
                Console.WriteLine("model.Instances amount: " + model2.Instances.Count);
                bool runOnce = false;
                foreach (IPersistEntity entityThe in model2.Instances) {
                    WpfMeshGeometry3D m = WpfMeshGeometry3D.GetGeometry(entityThe, transform, mat);
                    string nameOfType = entityThe.GetType().ToString();
                    List<Vector3> vecsHere = new List<Vector3>();
                    foreach (Point3D point in m.Mesh.Positions) {
                        vecsHere.Add(new Vector3(point));
                    }
                    vecs.Add(vecsHere.ToArray());
                    trises.Add(m.Mesh.TriangleIndices.ToArray());
                    types.Add(nameOfType);
                }
            }
            byte[] data = SerializerMeshPack.SerializeMeshPack(vecs, trises, types);
            return data;
        }