anchor.diff:      return ParameterKind.REQUIRED;
     }
   
  -  /**
  -   * Return the annotations associated with this parameter.
  -   */
  +  @override
     NodeList<Annotation> get metadata => _metadata;
   
     /**
  
positive.code:    * Return the kind of this parameter.
     */
    ParameterKind get kind;
  }
  
  /**
  
negative.code:   @override
    bool get isFinal => _parameter != null && _parameter.isFinal;
  
    @override
    NodeList<Annotation> get metadata => _parameter.metadata;
  
    /**
     * Return the formal parameter with which the default value is associated.
     */
  