Widget _buildCapsuleDoubleHandle(BuildContext context) {
    return TDRangeSlider(
      sliderThemeData: TDSliderThemeData.capsule(
        min: 0,
        max: 100,
        scaleFormatter: (value) => value.toInt().toString(),
      ),
      value: const RangeValues(20, 60),
      onChanged: (value) {},
    );
  }