message: Add missing namespace specification for string.
diff: @@ -51,8 +51,8 @@ static std::string GetConversionFunction(
  return "Convert_" + named_attr.name.str();
  }
  -using ArgumentName = string;
  -using ArgumentDeclaration = string;
  +using ArgumentName = std::string;
  +using ArgumentDeclaration = std::string;
  using Argument = std::pair<ArgumentName, ArgumentDeclaration>;
  using ArgumentList = std::vector<Argument>;
  