anchor.diff:    @override
     final CompilationUnitElementForLink enclosingElement;
   
  -  /**
  -   * The unlinked representation of the typedef in the summary.
  -   */
  +  /// The unlinked representation of the typedef in the summary.
     final UnlinkedTypedef _unlinkedTypedef;
   
     GenericTypeAliasElementForLink(this.enclosingElement, this._unlinkedTypedef);
  
positive.code:   String toString() => '$enclosingElement.$name';
  }
  
  /**
   * Element representing a generic function resynthesized from a summary during
   * linking.
   */
  class GenericFunctionTypeElementForLink extends Object
      with
          TypeParameterizedElementMixin,
  
negative.code:       enclosingElement.enclosingElement.library._linker.typeProvider.intType;
  }
  
  /// Specialization of [FieldElementForLink] for enum fields.
  class FieldElementForLink_EnumField_value
      extends FieldElementForLink_EnumField {
    /// The unlinked representation of the field in the summary.
    final UnlinkedEnumValue unlinkedEnumValue;
  
    FieldElementForLink_EnumField_value(
  