private void InsertSourceBlockInTargetModel(DxfModel sourceModel, DxfModel targetModel)
                {

                    double positionX = 525;
                    double positionY = 375;
                    double positionZ = 0;

                    var cloneContext = new CloneContext(sourceModel, targetModel, ReferenceResolutionType.CloneMissing);

                    foreach (var sourceBlock in sourceModel.Blocks)
                    {
                        var clonedBlock = (DxfBlock)sourceBlock.Clone(cloneContext);
                        
                        targetModel.Blocks.Add(clonedBlock);

                        var sourceDxfInsert = (DxfInsert)FindBlockInsertions(this.sourceModel, sourceBlock);

                        var targetDxfInsert = new DxfInsert(clonedBlock, new Point3D(positionX, positionY, positionZ));

                        foreach (var attribute in sourceDxfInsert.Attributes)
                        {
                            var clonedAttribute = (DxfAttribute)attribute.Clone(cloneContext);
                            targetDxfInsert.Attributes.Add(clonedAttribute);
                        }

                        targetDxfInsert.ApplyInsertionPointOffsetToAttributes();


                        targetModel.Entities.Add(targetDxfInsert);
                    }
                    cloneContext.ResolveReferences();


                    static DxfEntity FindBlockInsertions(DxfModel sourceModel, DxfBlock sourceBlock)
                        => ScanEntityCollectionForBlockInsertions(sourceModel.Entities, sourceBlock);

                    static DxfEntity ScanEntityCollectionForBlockInsertions(IEnumerable<DxfEntity> collection,
                                                                            DxfBlock block)
                        => collection.First(entity => entity is DxfInsert insert && insert.Block == block);
                }