anchor.diff:  }
   
   /**
  - * Representation of the dynamic type during linking.
  - */
  -class DynamicTypeForLink extends DartTypeForLink {
  -  /**
  -   * Singleton instance of the dynamic type.
  -   */
  -  static const DynamicTypeForLink instance = const DynamicTypeForLink._();
  -
  -  const DynamicTypeForLink._();
  -}
  -
  -/**
    * Element representing a field resynthesized from a summary during
    * linking.
    */
  
positive.code: 
    @override
    noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
  }
  
  /**
   * Representation of the void type during linking.
   */
  class VoidTypeForLink extends DartTypeForLink {
    static const VoidTypeForLink instance = const VoidTypeForLink._();
    const VoidTypeForLink._();
  }
  
  /**
  
negative.code:   String get name => unlinkedVariable.name;
  
    @override
    DartType buildType(DartType getTypeArgument(int i),
            List<int> implicitFunctionTypeIndices) =>
        DynamicTypeImpl.instance;
  
    ReferenceableElementForLink getContainedName(String name) {
      return new NonstaticMemberElementForLink(_constNode);
  