Fix build error with GCC 10

    command m_shutdown_command;

};

#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 11

typedef enum scord::adhoc_storage::type adhoc_storage_type;

#else

using adhoc_storage_type = enum scord::adhoc_storage::type;

#endif

using adhoc_storage_config_map =

        std::unordered_map<adhoc_storage_type, adhoc_storage_config>;