anchor.diff:  
     void mapLiteral(
             ExpressionJudgment judgment,
  -          Location location,
  +          int location,
             Token constKeyword,
             Object typeArguments,
             Token leftBracket,
  
positive.code: 
    void methodInvocation(
        ExpressionJudgment judgment,
        Location resultOffset,
        List<DartType> argumentsTypes,
        bool isImplicitCall,
        Reference interfaceMember,
        FunctionType calleeType,
        Substitution substitution,
        DartType inferredType) {
  
negative.code:           DartType inferredType) =>
        genericExpression("conditionalExpression", location, inferredType);
  
    void constructorInvocation(ExpressionJudgment judgment, int location,
        Node expressionTarget, DartType inferredType) {
      // A class reference may have already been stored at this location by
      // storeClassReference.  We want to replace it with a constructor
      // reference.
  