anchor.diff:                        CupertinoButton.filled(
                           child: const Text('Action Sheet'),
                           padding: const EdgeInsets.symmetric(vertical: 16.0, horizontal: 36.0),
  -                        onPressed: () {
  -                          showDemoActionSheet(
  -                            context: context,
  -                            child: CupertinoActionSheet(
  -                              title: const Text('Favorite Dessert'),
  -                              message: const Text('Please select the best dessert from the options below.'),
  -                              actions: <Widget>[
  -                                CupertinoActionSheetAction(
  -                                  child: const Text('Profiteroles'),
  -                                  onPressed: () {
  -                                    Navigator.pop(context, 'Profiteroles');
  -                                  },
  -                                ),
  -                                CupertinoActionSheetAction(
  -                                  child: const Text('Cannolis'),
  -                                  onPressed: () {
  -                                    Navigator.pop(context, 'Cannolis');
  -                                  },
  -                                ),
  -                                CupertinoActionSheetAction(
  -                                  child: const Text('Trifle'),
  -                                  onPressed: () {
  -                                    Navigator.pop(context, 'Trifle');
  -                                  },
  -                                ),
  -                              ],
  -                              cancelButton: CupertinoActionSheetAction(
  -                                child: const Text('Cancel'),
  -                                isDefaultAction: true,
  -                                onPressed: () {
  -                                  Navigator.pop(context, 'Cancel');
  -                                },
  -                              ),
  -                            ),
  -                          );
  -                        },
  +                        onPressed: () => _onActionSheetPress(context),
                         ),
                       ],
                     ),
  
positive.code:                     children: <Widget>[
                        CupertinoButton.filled(
                          child: const Text('Alert'),
                          onPressed: () {
                            showDemoDialog(
                              context: context,
                              child: CupertinoAlertDialog(
                                title: const Text('Discard draft?'),
                                actions: <Widget>[
                                  CupertinoDialogAction(
                                    child: const Text('Discard'),
                                    isDestructiveAction: true,
                                    onPressed: () {
                                      Navigator.pop(context, 'Discard');
                                    },
                                  ),
                                  CupertinoDialogAction(
                                    child: const Text('Cancel'),
                                    isDefaultAction: true,
                                    onPressed: () {
                                      Navigator.pop(context, 'Cancel');
                                    },
                                  ),
                                ],
                              ),
                            );
                          },
                        ),
                        const Padding(padding: EdgeInsets.all(8.0)),
                        CupertinoButton.filled(
                          child: const Text('Alert with Title'),
                          padding: const EdgeInsets.symmetric(vertical: 16.0, horizontal: 36.0),
                          onPressed: () {
                            showDemoDialog(
                              context: context,
                              child: CupertinoAlertDialog(
                                title: const Text('Allow "Maps" to access your location while you are using the app?'),
                                content: const Text('Your current location will be displayed on the map and used '
                                  'for directions, nearby search results, and estimated travel times.'),
                                actions: <Widget>[
                                  CupertinoDialogAction(
                                    child: const Text('Don\'t Allow'),
                                    onPressed: () {
                                      Navigator.pop(context, 'Disallow');
                                    },
                                  ),
                                  CupertinoDialogAction(
                                    child: const Text('Allow'),
                                    onPressed: () {
                                      Navigator.pop(context, 'Allow');
                                    },
                                  ),
                                ],
                              ),
                            );
                          },
                        ),
                        const Padding(padding: EdgeInsets.all(8.0)),
                        CupertinoButton.filled(
                          child: const Text('Alert with Buttons'),
                          padding: const EdgeInsets.symmetric(vertical: 16.0, horizontal: 36.0),
                          onPressed: () {
                            showDemoDialog(
                              context: context,
                              child: const CupertinoDessertDialog(
                                title: Text('Select Favorite Dessert'),
                                content: Text('Please select your favorite type of dessert from the '
                                  'list below. Your selection will be used to customize the suggested '
                                  'list of eateries in your area.'),
                              ),
                            );
                          },
                        ),
                        const Padding(padding: EdgeInsets.all(8.0)),
                        CupertinoButton.filled(
  
negative.code:       ),
      );
    }
  
    void _onAlertPress(BuildContext context) {
      showDemoDialog(
        context: context,
        child: CupertinoAlertDialog(
          title: const Text('Discard draft?'),
          actions: <Widget>[
            CupertinoDialogAction(
              child: const Text('Discard'),
              isDestructiveAction: true,
              onPressed: () => Navigator.pop(context, 'Discard'),
            ),
            CupertinoDialogAction(
              child: const Text('Cancel'),
              isDefaultAction: true,
              onPressed: () => Navigator.pop(context, 'Cancel'),
            ),
          ],
        ),
      );
    }
  
    void _onAlertWithTitlePress(BuildContext context) {
      showDemoDialog(
        context: context,
        child: CupertinoAlertDialog(
          title: const Text('Allow "Maps" to access your location while you are using the app?'),
          content: const Text('Your current location will be displayed on the map and used '
            'for directions, nearby search results, and estimated travel times.'),
          actions: <Widget>[
            CupertinoDialogAction(
              child: const Text('Don\'t Allow'),
              onPressed: () => Navigator.pop(context, 'Disallow'),
            ),
            CupertinoDialogAction(
              child: const Text('Allow'),
              onPressed: () => Navigator.pop(context, 'Allow'),
            ),
          ],
        ),
      );
    }
  
    void _onAlertWithButtonsPress(BuildContext context) {
      showDemoDialog(
        context: context,
        child: const CupertinoDessertDialog(
          title: Text('Select Favorite Dessert'),
          content: Text('Please select your favorite type of dessert from the '
            'list below. Your selection will be used to customize the suggested '
            'list of eateries in your area.'),
        ),
      );
    }
  
    void _onActionSheetPress(BuildContext context)  {
      showDemoActionSheet(
        context: context,
        child: CupertinoActionSheet(
          title: const Text('Favorite Dessert'),
          message: const Text('Please select the best dessert from the options below.'),
          actions: <Widget>[
            CupertinoActionSheetAction(
              child: const Text('Profiteroles'),
              onPressed: () => Navigator.pop(context, 'Profiteroles'),
            ),
            CupertinoActionSheetAction(
              child: const Text('Cannolis'),
              onPressed: () => Navigator.pop(context, 'Cannolis'),
            ),
            CupertinoActionSheetAction(
              child: const Text('Trifle'),
              onPressed: () => Navigator.pop(context, 'Trifle'),
            ),
          ],
          cancelButton: CupertinoActionSheetAction(
            child: const Text('Cancel'),
            isDefaultAction: true,
            onPressed: () => Navigator.pop(context, 'Cancel'),
          ),
        ),
      );
    }
  }
  
  class CupertinoDessertDialog extends StatelessWidget {
  