internal static void SaveEditor(string id, EditorCanvas canvas)
        {
            if (canvas.FocusManager.IsEditorFocused)
            {
                canvas.FocusManager.FocusedEditor.RequestFocusCommit(true);
            }
            var mem = canvas.SaveContent(new MemoModelSerializer());

            //using (var stream = new MemoryStream())
            //using (var writer = XmlDictionaryWriter.CreateBinaryWriter(stream)) {

            //    var knownTypes = new [] {
            //        typeof(Memo),
            //        typeof(Dictionary<string, object>),
            //        typeof(List<IMemento>),
            //        typeof(System.Drawing.Rectangle),
            //        typeof(Mkamo.Common.Forms.Descriptions.FontDescription),
            //    };

            //    var ser = new DataContractSerializer(typeof(Memento), knownTypes, int.MaxValue, false, true, null);
            //    ser.WriteObject(writer, mem);

            //    var acc = MemopadApplication.Instance.MemoAccessor;
            //    if (acc.IsMementoExists(id)) {
            //        acc.UpdateMemento(id, stream.GetBuffer());
            //    } else {
            //        acc.InsertMemento(id, stream.GetBuffer());
            //    }

            //}

            using (var stream = new MemoryStream()) {
                var formatter = new BinaryFormatter();
                formatter.Serialize(stream, mem);

                //var serializer = new NetDataContractSerializer();
                //serializer.Serialize(stream, mem);

                var acc = MemopadApplication.Instance.MemoAccessor;
                if (acc.IsMementoExists(id))
                {
                    acc.UpdateMemento(id, stream.GetBuffer());
                }
                else
                {
                    acc.InsertMemento(id, stream.GetBuffer());
                }
            }
        }