Widget _customIconBuildStyle(BuildContext context) {
    return TDCheckboxGroupContainer(
      selectIds: const ['index:1'],
      cardMode: true,
      direction: Axis.vertical,
      directionalTdCheckboxes:  [
        TDCheckbox(
          id: 'index:0',
          title: '多选',
          subTitle: '描述信息',
          titleMaxLine: 2,
          subTitleMaxLine: 2,
          cardMode: true,
          customIconBuilder: (context, checked){
            return const Icon(TDIcons.app, size: 12,);
          },
        ),
      ],
    );
  }