activeDividerRadius property Null safety

double? activeDividerRadius

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

By default, active divider will be in same height of active track.

This snippet shows how to set active divider radius in SfRangeSliderThemeData.

SfRangeValues _values = SfRangeValues(4.0, 7.0);

  body: Center(
      child: SfRangeSliderTheme(
          data: SfRangeSliderThemeData(
              activeDividerRadius: 5,
          child:  SfRangeSlider(
              min: 2.0,
              max: 10.0,
              values: _values,
              onChanged: (SfRangeValues newValues){
                  setState(() {
                      _values = newValues;


final double? activeDividerRadius;