private MyEdit GetEdit(OutlinerDocument document, TreeListView treeListView)
{
OutlinerNote note = document.FindOutlinerNoteByDocument(__DocumentGuid);
Debug.Assert(note != null, "GetEdit's note == null");
TreeListViewItem item = ViewHelpers.GetContainerForItem(treeListView, note);
Debug.Assert(item != null, "Bad news: UndoMyAction's Undo has item == null");
MainWindow mw = DragDropHelper.GetMainWindow(treeListView);
MyEdit edit = item.GetEditor(mw.GetViewColumnId(__ColumnId), __ColumnId, __IsInlineNote);
return(edit);
}