anchor.diff:        logger: logger,
         resourceProvider: resourceProvider,
         byteStore: byteStore,
  -      contentOverlay: contentOverlay,
         sourceFactory: sourceFactory,
         analysisOptions: analysisOptions,
         packages: packages ?? Packages.empty,
  
positive.code:     required PerformanceLog logger,
      required ResourceProvider resourceProvider,
      required ByteStore byteStore,
      @Deprecated('Use OverlayResourceProvider instead')
          FileContentOverlay? contentOverlay,
      required SourceFactory sourceFactory,
      required AnalysisOptionsImpl analysisOptions,
      required Packages packages,
  
negative.code:     PerformanceLog logger,
      ResourceProvider resourceProvider,
      ByteStore byteStore,
      // ignore: avoid_unused_constructor_parameters
      FileContentOverlay? contentOverlay,
      // ignore: avoid_unused_constructor_parameters
      ContextRoot? contextRoot,
  