anchor.diff:    ///  * Android: TYPE_VERTICAL_DOUBLE_ARROW
     ///  * Web: row-resize
     ///  * Windows: IDC_SIZENS
  +  ///  * Windows UWP: CoreCursorType::SizeNorthSouth
     ///  * Linux: row-resize
     ///  * macOS: resizeUpDownCursor
     static const SystemMouseCursor resizeRow = SystemMouseCursor._(kind: 'resizeRow');
  
positive.code:   ///  * Android: TYPE_VERTICAL_DOUBLE_ARROW
    ///  * Web: s-resize
    ///  * Windows: IDC_SIZENS
    ///  * Linux: s-resize
    ///  * macOS: resizeDownCursor
    static const SystemMouseCursor resizeDown = SystemMouseCursor._(kind: 'resizeDown');
  
negative.code:   ///  * Android: TYPE_NO_DROP
    ///  * Web: not-allowed
    ///  * Windows: IDC_NO
    ///  * Windows UWP: CoreCursorType::UniversalNo
    ///  * Linux: not-allowed
    ///  * macOS: operationNotAllowedCursor
    ///
  