anchor.diff:  const Color _kBackgroundColor = CupertinoColors.white;
   
   
  -// The iOS date picker and timer picker has their width fixed to 330.0 in all
  -// modes.
  +// The iOS timer picker has its width fixed to 330.0 in all modes.
   //
   // If the maximum width given to the picker is greater than 330.0, the leftmost
   // and rightmost column will be extended equally so that the widths match, and
   // the picker is in the center.
   //
  -// If the maximum width given to the picker is smaller than 330.0, the picker's
  -// layout will be broken.
  +// If the maximum width given to the picker is smaller than 330.0, the picker is
  +// placed in the center and both left side and right side are clipped.
   
   
   /// Different modes of [CupertinoTimerPicker].
  
positive.code:         else
            return new Semantics(
              label: semanticsLabel,
              child: new Container(
                alignment: alignCenterLeft,
                child: new Container(
  
negative.code: 
          return new Semantics(
            label: semanticsLabel,
            excludeSemantics: true,
            child: new Container(
              alignment: alignCenterLeft,
              child: new Container(
  