SubgameSpec(const std::string &id_="",
const std::string &path_="",
const std::string &gamemods_path_="",
const std::set<std::string> &addon_mods_paths_=std::set<std::string>(),
SubgameSpec(const std::string &id_="",
const std::string &path_="",
const std::string &gamemods_path_="",
const std::set<std::string> &addon_mods_paths_=std::set<std::string>(),