Widget _buildRedPointMessageBadge(BuildContext context) {
    return Container(
        alignment: Alignment.bottomLeft,
        margin: const EdgeInsets.only(left: 16, right: 16),
        child: SizedBox(
          width: 40,
          height: 24,
          child: Stack(
            alignment: Alignment.bottomLeft,
            children: [
              TDText(
                '消息',
                font: TDTheme.of(context).fontBodyLarge,
              ),
              const Positioned(
                child: TDBadge(TDBadgeType.redPoint),
                right: 0,
                top: 0,
              )
            ],
          ),
        ));
  }