anchor.diff:  //
   //     external SkPaint SkPaint();
   @JS('window.flutterCanvasKit.Paint')
  +@staticInterop
   class SkPaint {
  -  external SkPaint();
  +  external factory SkPaint();
  +}
  +
  +extension SkPaintExtension on SkPaint {
     external void setBlendMode(SkBlendMode blendMode);
     external void setStyle(SkPaintStyle paintStyle);
     external void setStrokeWidth(double width);
  
positive.code: }
  
  @JS()
  class SkShaderNamespace {
    external SkShader MakeLinearGradient(
      Float32List from, // 2-element array
      Float32List to, // 2-element array
  
negative.code: 
  @JS()
  @anonymous
  @staticInterop
  class SkImage {}
  
  extension SkImageExtension on SkImage {
    external void delete();
    external int width();
    external int height();
  