anchor.diff:    FunctionEntity get mapLiteralUntypedEmptyMaker {
       _ensureMapLiteralHelpers();
       return _mapLiteralUntypedEmptyMaker;
  +  }
  +
  +  ClassEntity _setLiteralClass;
  +  ClassEntity get setLiteralClass => _setLiteralClass ??=
  +      _findClass(_env.lookupLibrary(Uris.dart_collection), 'LinkedHashSet');
  +
  +  ConstructorEntity _setLiteralConstructor;
  +  ConstructorEntity _setLiteralConstructorEmpty;
  +  FunctionEntity _setLiteralUntypedMaker;
  +  FunctionEntity _setLiteralUntypedEmptyMaker;
  +
  +  void _ensureSetLiteralHelpers() {
  +    if (_setLiteralConstructor != null) return;
  +
  +    _setLiteralConstructor =
  +        _env.lookupConstructor(setLiteralClass, '_literal');
  +    _setLiteralConstructorEmpty =
  +        _env.lookupConstructor(setLiteralClass, '_empty');
  +    _setLiteralUntypedMaker =
  +        _env.lookupLocalClassMember(setLiteralClass, '_makeLiteral');
  +    _setLiteralUntypedEmptyMaker =
  +        _env.lookupLocalClassMember(setLiteralClass, '_makeEmpty');
  +  }
  +
  +  ConstructorEntity get setLiteralConstructor {
  +    _ensureSetLiteralHelpers();
  +    return _setLiteralConstructor;
  +  }
  +
  +  ConstructorEntity get setLiteralConstructorEmpty {
  +    _ensureSetLiteralHelpers();
  +    return _setLiteralConstructorEmpty;
  +  }
  +
  +  FunctionEntity get setLiteralUntypedMaker {
  +    _ensureSetLiteralHelpers();
  +    return _setLiteralUntypedMaker;
  +  }
  +
  +  FunctionEntity get setLiteralUntypedEmptyMaker {
  +    _ensureSetLiteralHelpers();
  +    return _setLiteralUntypedEmptyMaker;
     }
   
     FunctionEntity _objectNoSuchMethod;
  
positive.code:     return _createInterfaceType(listClass, [elementType]);
    }
  
    /// Returns an instance of the `Map` type defined in 'dart:core' with
    /// [keyType] and [valueType] as its type arguments.
    ///
  
negative.code: 
    ClassEntity get constMapLiteralClass;
  
    ClassEntity get constSetLiteralClass;
  
    ClassEntity get typeVariableClass;
  
    ClassEntity get jsInvocationMirrorClass;
  