anchor.diff:        parameter = ast.defaultFormalParameter(node, ParameterKind.NAMED,
             defaultValue.separator, defaultValue.value);
       }
  -    localDeclarations[nameToken.offset] = parameter;
       push(parameter);
     }
   
  
positive.code: 
      Comment comment = _findComment(metadata, name.beginToken);
      var typeParameter = ast.typeParameter(comment, metadata, name, null, null);
      localDeclarations[name.offset] = typeParameter;
      push(typeParameter);
    }
  
  
negative.code:   ScriptTag scriptTag;
    final List<Directive> directives = <Directive>[];
    final List<CompilationUnitMember> declarations = <CompilationUnitMember>[];
  
    @override
    final Uri uri;
  