anchor.diff:      return null;
     }
   
  -  /**
  -   * Compute the bytes of the linked bundle associated with this SDK.
  -   */
  +  /// Compute the bytes of the linked bundle associated with this SDK.
     List<int> _computeLinkedBundleBytes() {
       List<Source> librarySources = sdkLibraries
           .map((SdkLibrary library) => mapDartUri(library.shortName))
  
positive.code: }
  
  class OptionElement extends HtmlElement {
    factory OptionElement({String data: '', String value : '', bool selected: false}) {
    }
  
    factory OptionElement._([String data, String value, bool defaultSelected, bool selected]) {
    }
  }
  
  class ScriptElement extends HtmlElement {
  
negative.code:   String get innerHtml {
      throw 'not the real implementation';
    }
  
    set innerHtml(String value) {
      // stuff
    }
  