Widget _checkPosition(BuildContext context) {
    return Column(
      children: [
        TDCheckboxGroupContainer(
          contentDirection: TDContentDirection.right,
          selectIds: const ['index:0'],
          child: const TDCheckbox(
            id: 'index:0',
            title: '多选',
          ),
        ),
        TDCheckboxGroupContainer(
          contentDirection: TDContentDirection.left,
          selectIds: const ['index:0'],
          child: const TDCheckbox(
            id: 'index:0',
            title: '多选',
          ),
        )
      ],
    );
  }