anchor.diff:  }
   
   @JS()
  +@anonymous
   class SkImageFilter {
     external void delete();
   }
  
positive.code: }
  
  @JS()
  class SkParagraph {
    external double getAlphabeticBaseline();
    external bool didExceedMaxLines();
  
negative.code: 
  /// Any Skia object that has a `delete` method.
  @JS()
  @anonymous
  class SkDeletable {
    /// Deletes the C++ side object.
    external void delete();
  