anchor.diff:      required SkAlphaType alphaType,
       required ColorSpace colorSpace,
     });
  +}
  +
  +extension SkImageInfoExtension on SkImageInfo {
     external SkAlphaType get alphaType;
     external ColorSpace get colorSpace;
     external SkColorType get colorType;
  
positive.code: 
  @JS()
  @anonymous
  class SkPartialImageInfo {
    external factory SkPartialImageInfo({
      required int width,
  
negative.code: }
  
  @JS()
  @staticInterop
  class SkData {}
  
  extension SkDataExtension on SkData {
    external int size();
    external bool isEmpty();
    external Uint8List bytes();
  