BiomePainter.History.HistoryManager.MoveNext C# (CSharp) Метод

        private bool MoveNext()
        {
            if (redoStack.Count == 0)
                return false;

            do
            {
                undoStack.AddLast(redoStack.Last.Value);
                redoStack.RemoveLast();
            }
            while (redoStack.Count > 0 && undoStack.Last.Value.PreviousAction == null);

            return true;
        }