anchor.diff:                items: const <BottomNavigationBarItem>[
                   BottomNavigationBarItem(
                     icon: Icon(Icons.ac_unit),
  -                  title: Text('AC'),
  +                  label: 'AC',
                   ),
                   BottomNavigationBarItem(
                     icon: Icon(Icons.access_alarm),
  -                  title: Text('Alarm'),
  +                  label: 'Alarm',
                   ),
                 ],
               ),
  
positive.code:                 type: BottomNavigationBarType.shifting,
                  items: <BottomNavigationBarItem>[
                    BottomNavigationBarItem(
                      title: const Text('Page 1'),
                      backgroundColor: _backgroundColor,
                      icon: const Icon(Icons.dashboard),
                    ),
                    BottomNavigationBarItem(
                      title: const Text('Page 2'),
                      backgroundColor: _backgroundColor,
                      icon: const Icon(Icons.menu),
                    ),
  
negative.code:               items: const <BottomNavigationBarItem>[
                  BottomNavigationBarItem(
                    icon: Icon(Icons.ac_unit),
                    label: 'AC',
                  ),
                  BottomNavigationBarItem(
                    icon: Icon(Icons.access_alarm),
                    label: 'Alarm',
                  ),
                  BottomNavigationBarItem(
                    icon: Icon(Icons.access_time),
                    label: 'Time',
                  ),
                  BottomNavigationBarItem(
                    icon: Icon(Icons.add),
                    label: 'Add',
                  ),
                ],
              ),
  