// In state_machine
private: auto
state_machine::stop_bbbbbbb(states::recording &&s,
                            aaaaaa::bbbbbbb_stopped_reason reason)
    -> fsm::state_machine<
        aaaaaa::bbbbbbb::state_machine,
        std::variant<aaaaa::bbbb::cccccc::ddddddd::eeeeee::aaaaaa_connected,
                     aaaaa::bbbb::cccccc::ddddddd::eeeeee::aaaaaa_disconnected,
                     aaaaa::bbbb::cccccc::ddddddd::eeeeee::aaaaaa_state,
                     aaaaa::bbbb::cccccc::ddddddd::eeeeee::aaaaaa_info,
                     aaaaa::bbbb::cccccc::ddddddd::eeeeee::aaaaaa_battery,
                     aaaaa::bbbb::cccccc::ddddddd::eeeeee::account_error,
                     aaaaa::bbbb::cccccc::ddddddd::eeeeee::account_valid>,
        std::variant<aaaaa::bbbb::aaaaaa::bbbbbbb::states::init>>::state