class AR1{
    Integer id;
    DomainService ds;

    //OPTION 1
    void createAr2RootOpt1(){
        AR2 ar2 = new AR2();
        ds.saveToRepo(ar2);
    }

    //OPTION 2
    void createAr2RootOpt2(){
        publishEvent(new SholdCreateAR2Event());    //we don't need this event. Shoud it still be preserved in event store?
    }
}

class AR2{
    Integer id;
    Integer ar1Id;

    void handle(CreateAR2Command command){
        //init this AR with values and save
        publishEvent(AR2CreatedEvent());    //used for projections afterwards and saved inside AR2 event store
    }
}

class Saga{
    void handle(SholdCreateAR2Event ev){
        emitCommand(new CreateAR2Command());
    }
}