const DictValue& dict = value.dict_value();
      using FieldTy = protobuf::MapPair<std::string, StructuredValue>;
      llvm::SmallVector<const FieldTy*, 4> fields;
      for (auto& field : dict.fields()) {
        fields.push_back(&field);
      }
      llvm::sort(fields, [](const FieldTy* a, const FieldTy* b) {
        return a->first < b->first;
      });
      for (auto& field : fields) {