// Enable serialization
#define HFSM_ENABLE_SERIALIZATION
​
#include <hfsm2/machine.hpp>
#include <assert.h>
​
using M = hfsm2::Machine;
​
using FSM = M::PeerRoot<
                struct State1,
                struct State2
            >;
​
struct State1 : FSM::State { /* .. */ };
struct State2 : FSM::State { /* .. */ };
​
int main() {
    // Buffer for serialization
    //  Members:
    //   bitSize - Number of payload bits used
    //   payload - Serialized data
    FSM::Instance::SerialBuffer buffer;
​
    {
       FSM::Instance fsm;              // Create a new FSM instance
       fsm.changeTo<State2>();         // Request a transition to 'State2'
       fsm.update();                   // Process transitions
       assert(fsm.isActive<State2>()); // Check if transition completed
​
       fsm.save(buffer);               // Serialize FSM configuration into 'buffer'
    }
    
    {
       FSM::Instance fsm;              // Create a fresh FSM instance
       assert(fsm.isActive<State1>()); // Initial 'State1' is activated by default
​
       fsm.load(buffer);               // De-serialize FSM from 'buffer'
       assert(fsm.isActive<State2>()); // Check its configuration is restored
    }
}