anchor.diff:  
       _instanceMethods = _methods
           .where((m) => !m.isStatic && !m.isOperator)
  -        .toList(growable: false);
  -
  -    // XXX working around a VM SDK issue. Once fixed, you can chain the sort()
  -    if (_instanceMethods.isNotEmpty) _instanceMethods.sort(byName);
  +        .toList(growable: false)..sort(byName);
   
       return _instanceMethods;
     }
  
positive.code: 
      _constructors = _cls.constructors.where(isPublic).map((e) {
        return new Constructor(e, library);
      }).toList(growable: true);
  
      // XXX working around a VM SDK issue. Once fixed, you can chain the sort()
      if (_constructors.isNotEmpty) _constructors.sort(byName);
  
      return _constructors;
    }
  
negative.code:   List<Operator> get operators {
      if (_operators != null) return _operators;
  
      _operators = _methods.where((m) => m.isOperator).toList(growable: false)
        ..sort(byName);
  
      return _operators;
    }
  