How get machine state id？ about hfsm2 HOT 4 CLOSED

int
main() noexcept {
    // construct everything
    Context title;
    Logger logger;
    FSM::Instance machine(title, &logger);

    // do the work :)
    machine.react(Play{"any"});            // Idle -> Playing
    machine.react(Stop{});                 // Playing -> Idle

    if (machine.isActive<Idle>()) {
        // do something
    } else if (machine.isActive<Playing>()) {
        // do something
    } else if (machine.isActive<Paused>()) {
        // do something
    } else {
        // do something
    }

/*
    switch (machine.current_state_id()) { // my stupid idea
    case FSM::stateId<Idle>(): {
        // do something
        break;
    } case FSM::stateId<Playing>(): {
        // do something
        break;
    } case FSM::stateId<Paused>(): {
        // do something
        break;
    } default:
        // do something
    }
*/

    return 0;
}

struct DoMoreWork {}; // new event

struct Idle : Base {
    void react(const DoMoreWork& event, FullControl& control) {
        // do more work here
    }
};

struct Playing : Base {
    void react(const DoMoreWork& event, FullControl& control) {
        // do more work here
    }
};

struct Paused : Base {
    void react(const DoMoreWork& event, FullControl& control) {
        // do more work here
    }
};

int main() {
    // ...

    machine.react(DoMoreWork{}); // more work gets done here
}