arg_names.push_back(AvoidCPPKeywords(api_def_arg.rename_to()));

    // TODO(keveman): Include input type information.
    StringPiece description = api_def_arg.description();
    if (!description.empty()) {
      ConsumeEquals(&description);
      strings::StrAppend(&comment, "* ",
                         AvoidCPPKeywords(api_def_arg.rename_to()), ": ",
                         api_def_arg.description(), "\n");
    }
  }