public T Redo()
{
if (RedoList.Count == 0)
{
return(default(T));
}
var redoAction = RedoList.Pop();
DoList.Push(redoAction);
return(redoAction);
}
public void Do(T t)
{
DoList.Push(t);
AdjustDoListOverMaxSteps();
RedoList.Clear();
}