anchor.diff:  Library generateLibrary(dart2js.Dart2JsLibraryMirror library) {
     _currentLibrary = library;
     var result = new Library(docName(library), _commentToHtml(library),
  +      _classes(library.classes),
  +      _methods(library.functions),
         _variables(library.variables),
  -      _methods(library.functions),
  -      _classes(library.classes), _isHidden(library));
  +      _isHidden(library));
     _findPackage(result, library);
     logger.fine('Generated library for ${result.name}');
     return result;
  
positive.code:   return annotations;
  }
  
  /// Returns any documentation comments associated with a mirror with
  /// simple markdown converted to html.
  String _commentToHtml(DeclarationMirror mirror) {
    String commentText;
    mirror.metadata.forEach((metadata) {
      if (metadata is CommentInstanceMirror) {
        CommentInstanceMirror comment = metadata;
  
negative.code:     return basic;
    }
  
    Library(String name, String comment, this.classes, this.functions,
        this.variables, bool isPrivate) : super(name, comment,
            isPrivate, "");
  
    /// Generates a map describing the [Library] object.
  