anchor.diff:    }
   
     @override
  -  List<TypeParameterType> get allEnclosingTypeParameterTypes {
  -    if (isStatic) {
  -      return const <TypeParameterType>[];
  -    }
  -    return super.allEnclosingTypeParameterTypes;
  -  }
  -
  -  @override
     PropertyAccessorElement get correspondingGetter {
       if (isGetter || variable == null) {
         return null;
  
positive.code:   }
  
    @override
    List<TypeParameterType> get allEnclosingTypeParameterTypes {
      if (isStatic) {
        return const <TypeParameterType>[];
      }
      return super.allEnclosingTypeParameterTypes;
    }
  
    @override
    String get displayName {
      String displayName = super.displayName;
      if ("unary-" == displayName) {
  
negative.code:    * directly, or `null` if the list has not been computed yet.
     */
    List<TypeParameterType> _typeParameterTypes;
  
    /**
     * Get the type parameter context enclosing this one, if any.
  