anchor.diff:            ),
           );
         },
  +      switchKey: const Key('dark_theme'),
       );
     }
   }
  
positive.code: }
  
  class _BooleanItem extends StatelessWidget {
    const _BooleanItem(this.title, this.value, this.onChanged);
  
    final String title;
    final bool value;
    final ValueChanged<bool> onChanged;
  
    @override
    Widget build(BuildContext context) {
  
negative.code:           ),
          );
        },
        switchKey: const Key('text_direction'),
      );
    }
  }
  