AvalonStudio.TextEditor.Document.UndoStack.RecalcIsOriginalFile C# (CSharp) Method

		private void RecalcIsOriginalFile()
		{
			var newIsOriginalFile = elementsOnUndoUntilOriginalFile == 0;
			if (newIsOriginalFile != IsOriginalFile)
			{
				IsOriginalFile = newIsOriginalFile;
				NotifyPropertyChanged("IsOriginalFile");
			}
		}