activeDividerStrokeColor property Null safety

Color? activeDividerStrokeColor

Specifies the stroke color for the active divider in the SfSlider, SfRangeSlider, and SfRangeSelector.

Defaults to null.

The active side of the SfRangeSlider and SfRangeSelector is between the start and end thumbs.

The active side of the SfSlider is between the min value and thumb.

This snippet shows how to set active divider stroke color in SfRangeSliderThemeData.

SfRangeValues _values = SfRangeValues(4.0, 7.0);

  body: Center(
      child: SfRangeSliderTheme(
          data: SfRangeSliderThemeData(
              activeDividerStrokeWidth: 2,
          child:  SfRangeSlider(
              min: 2.0,
              max: 10.0,
              values: _values,
              onChanged: (SfRangeValues newValues){
                  setState(() {
                      _values = newValues;


final Color? activeDividerStrokeColor;