anchor.diff:    /// NOTE: setting this field will disable standard horizontal dividers which are controlled by
     /// themes and [dividerThickness] property
     // TODO: Add test
  +  @override
  +  // ignore: overridden_fields
     final TableBorder? border;
   
     /// Determines ratio of Small column's width to Medium column's width.
  
positive.code:   @override
    void initState() {
      super.initState();
      _opacityAnimation = CurvedAnimation(
        parent: _opacityController = AnimationController(
          duration: widget.duration,
  
negative.code:   final Duration duration;
  
    @override
    _SortArrowState createState() => _SortArrowState();
  }
  
  class _SortArrowState extends State<_SortArrow> with TickerProviderStateMixin {
    late AnimationController _opacityController;
    late Animation<double> _opacityAnimation;
  
  