anchor.diff:    ///  1. [localeListResolutionCallback] is attempted first.
     ///  2. [localeResolutionCallback] is attempted second.
     ///  3. Flutter's [WidgetsApp.basicLocaleListResolution] algorithm is attempted last.
  +  ///
  +  /// Properly localized projects should provide a more advanced algorithm than
  +  /// [basicLocaleListResolution] as it does not implement a complete algorithm
  +  /// (such as the one defined in [Unicode TR35](https://unicode.org/reports/tr35/#LanguageMatching))
  +  /// and is optimized for speed at the detriment of some uncommon edge-cases.
     /// {@endtemplate}
     ///
     /// This callback considers the entire list of preferred locales.
  
positive.code:   ///
    /// See also:
    ///
    ///  * [MaterialApp.localeListResolutionCallback], which sets the callback of the
    ///    [WidgetsApp] it creates.
    final LocaleResolutionCallback localeResolutionCallback;
  
    /// {@template flutter.widgets.widgetsApp.supportedLocales}
  
negative.code:   ///
    /// See also:
    ///
    ///  * [MaterialApp.localeListResolutionCallback], which sets the callback of the
    ///    [WidgetsApp] it creates.
    ///  * [basicLocaleListResolution], a static method that implements the locale resolution
    ///    algorithm that is used when no custom locale resolution algorithm is provided.
    final LocaleListResolutionCallback localeListResolutionCallback;
  
    /// {@macro flutter.widgets.widgetsApp.localeListResolutionCallback}
  