Widget _buildLinkMessage(BuildContext context) {
    return TDButton(
        isBlock: true,
        text: '带按钮的通知',
        size: TDButtonSize.large,
        type: TDButtonType.outline,
        width: 450,
        theme: TDButtonTheme.primary,
        onTap: () {
          TDMessage.showMessage(
              context: context,
              visible: true,
              icon: true,
              content: _commonContent,
              theme: MessageTheme.info,
              duration: 3000,
              link: '按钮',
              onLinkClick: () {
                print('link clicked!');
              });
        });
  }