anchor.diff:                    children: <Widget>[
                       Text(
                         "Scan Log",
  -                      style: TextStyle(
  -                          fontSize: 18,
  -                          fontWeight: FontWeight.bold
  -                      ),
  +                      style:
  +                          TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
                       ),
                       Card(
                         child: Container(
                           height: 500,
                           child: ListView.builder(
  -
                               itemCount: thirdList.length,
                               shrinkWrap: true,
  -                            itemBuilder: (context, index){
  -                              return
  -                                  buildThirdList(index)
  -                              ;
  -                            }
  -                        ),
  +                            itemBuilder: (context, index) {
  +                              return buildThirdList(index);
  +                            }),
                         ),
                       ),
                     ],
  
positive.code:   Future<Null> _readAll() async {
      final all = await _storage.readAll();
  
      _items = all.keys
          .map((key) => _SecItem(key, all[key]))
          .toList(growable: false);
      print('Secure storage item count is ${_items.length}');
    }
  
  
negative.code:             children: <Widget>[
                buildSlider(context),
                FlatButton(
                  child: Text("Scanning duration: " +
                      _cupertinoSliderValue.toInt().toString() +
                      "s"),
                  onPressed: () {},
                )
              ],
            ),
  