anchor.diff:        show: show ?? this.show,
         radius: radius ?? this.radius,
         color: color ?? this.color,
  +      label: label,
       );
     }
   
  
positive.code:   /// Determines color of the spot.
    Color color;
  
    /// You can change [show] value to show or hide the spot,
    /// [x], and [y] defines the location of spot in the [ScatterChart],
    /// [radius] defines the size of spot, and [color] defines the color of it.
    ScatterSpot(
      double x,
      double y, {
      bool? show,
      double? radius,
      Color? color,
    })  : show = show ?? true,
          radius = radius ?? 6,
          color = color ??
              Colors.primaries[((x * y) % Colors.primaries.length).toInt()],
          super(x, y);
  
    @override
  
negative.code:         show,
          radius,
          color,
          label,
        ];
  }
  
  