anchor.diff:  /// ),
   /// ```
   ///
  +/// {@animation 700 150 https://flutter.github.io/assets-for-api-docs/assets/material/toggle_buttons_mutually_exclusive.mp4}
  +///
   /// Here is an implementation that requires mutually exclusive selection,
   /// but allows for none of the buttons to be selected.
   /// ```dart
  
positive.code: /// ## Customizing toggle buttons
  /// Each toggle's behavior can be configured by the [onPressed] callback, which
  /// can update the [isSelected] list however it wants to.
  ///
  /// Here is an implementation that allows for multiple buttons to be
  /// simultaneously selected, while requiring none of the buttons to be
  
negative.code: ///   isSelected: isSelected,
  /// ),
  /// ```
  ///
  /// {@animation 700 150 https://flutter.github.io/assets-for-api-docs/assets/material/toggle_buttons_required.mp4}
  ///
  /// Here is an implementation that allows for multiple buttons to be
  /// simultaneously selected, while requiring at least one selection. Note
  