/// <summary>
/// This ends the undo tracking - the user is responsible for adding the operations
/// to the undo manager if they are to be tracked.
/// </summary>
public void EndDeferredTracking()
{
_trackedUndoSet = null;
}
/// <summary>
/// This starts collecting the undo operations in a deferred list so they can be applied as a group.
/// </summary>
/// <param name="undoSet">Undo set to use</param>
public void BeginDeferredTracking(UndoOperationSet undoSet)
{
_trackedUndoSet = undoSet;
}