iTextSharp.text.pdf.PdfStamperImp.AddOrder C# (CSharp) Метод

        private void AddOrder(PdfLayer parent, PdfArray arr, Dictionary<string,PdfLayer> ocgmap)
        {
            PdfObject obj;
            PdfLayer layer;
            for (int i = 0; i < arr.Size; i++) {
                obj = arr[i];
                if (obj.IsIndirect()) {
                    layer = ocgmap[obj.ToString()];
                    if (layer != null) {
                        layer.OnPanel = true;
                        RegisterLayer(layer);
                        if (parent != null) {
                            parent.AddChild(layer);
                        }
                        if (arr.Size > i + 1 && arr[i + 1].IsArray()) {
                            i++;
                            AddOrder(layer, (PdfArray)arr[i], ocgmap);
                        }
                    }
                }
                else if (obj.IsArray()) {
                    PdfArray sub = (PdfArray)obj;
                    if (sub.IsEmpty()) return;
                    obj = sub[0];
                    if (obj.IsString()) {
                        layer = new PdfLayer(obj.ToString());
                        layer.OnPanel = true;
                        RegisterLayer(layer);
                        if (parent != null) {
                            parent.AddChild(layer);
                        }
                        PdfArray array = new PdfArray();
                        for (ListIterator<PdfObject> j = sub.GetListIterator(); j.HasNext(); ) {
                            array.Add(j.Next());
                        }
                        AddOrder(layer, array, ocgmap);
                    }
                    else {
                        AddOrder(parent, (PdfArray)obj, ocgmap);
                    }
                }
            }
        }