anchor.diff:      BarAreaData belowBarData,
       BarAreaData aboveBarData,
       FlDotData dotData,
  -    CircularIntervalList dashArray,
  +    CircularArray dashArray,
       List<int> showingIndicators,
     }) {
       return LineChartBarData(
  
positive.code:   @override
    LineChartData lerp(double t) => begin.lerp(begin, end, t);
  }
  
negative.code:   /// show indicators based on provided indexes
    final List<int> showingIndicators;
  
    final CircularArray dashArray;
  
    const LineChartBarData({
      this.spots = const [],
  