anchor.diff:    ///
     /// In other words, this color will be the effective color of the [CupertinoDynamicColor]
     /// after it is resolved against a [BuildContext] that:
  -  /// - has a [CupertinoTheme] whose [brightness] is [Brightness.dark],
  +  /// - has a [CupertinoTheme] whose [CupertinoThemeData.brightness] is [Brightness.dark],
     /// or a [MediaQuery] whose [MediaQueryData.platformBrightness] is [Brightness.dark].
     /// - has a [MediaQuery] whose [MediaQueryData.highContrast] is `false`.
     /// - has a [CupertinoUserInterfaceLevel] that indicates [CupertinoUserInterfaceLevelData.elevated].
  
positive.code:   ///
    /// In other words, this color will be the effective color of the [CupertinoDynamicColor]
    /// after it is resolved against a [BuildContext] that:
    /// - has a [CupertinoTheme] whose [brightness] is [Brightness.light],
    /// or a [MediaQuery] whose [MediaQueryData.platformBrightness] is [Brightness.light].
    /// - has a [MediaQuery] whose [MediaQueryData.highContrast] is `false`.
    /// - has a [CupertinoUserInterfaceLevel] that indicates [CupertinoUserInterfaceLevelData.base].
  
negative.code:   ///
    /// In other words, this color will be the effective color of the [CupertinoDynamicColor]
    /// after it is resolved against a [BuildContext] that:
    /// - has a [CupertinoTheme] whose [CupertinoThemeData.brightness] is [Brightness.light],
    /// or a [MediaQuery] whose [MediaQueryData.platformBrightness] is [Brightness.light].
    /// - has a [MediaQuery] whose [MediaQueryData.highContrast] is `false`.
    /// - has a [CupertinoUserInterfaceLevel] that indicates [CupertinoUserInterfaceLevelData.elevated].
  