class MyViewModel : ViewModel() {
    val myEvent = publicEvent<MyEvent>()
    
    fun hello() {
        myEvent.post(MyEvent())
    }
}

class MyActivity : AppCompatActivity() {
    private val viewModel: MyViewModel by viewModels()
    
    fun onCreate(savedInstanceState: Bundle?) {
        handle(viewModel.myEvent) { doSomeWorkWith(it) }
    }
}

class MyViewModel : ViewModel() {
    private val myEventDelivery = delivery<MyEvent>()
    val myEvent = event(myEventDelivery)
    
    private val yourEventDelivery = delivery<YourEvent>()
    val yourEvent = event(yourEventDelivery)
    
    fun hello() {
        myEventDelivery.post(MyEvent())
        yourEventDelivery.post(YourEvent())
    }
}

class MyActivity : AppCompatActivity() {
    private val viewModel: MyViewModel by viewModels()
    
    fun onCreate(savedInstanceState: Bundle?) {
        handle(viewModel.myEvent) { doSomeWorkWith(it) }
        handle(viewModel.yourEvent) { doOtherThingsWith(it) }
    }
}

class MyViewModel : com.github.skgmn.viewmodelevent.ViewModel() {
    val myEvent = event<MyEvent>()
    
    fun hello() {
        // this post() is invisible to the outside of MyViewModel
        myEvent.post(MyEvent())
    }
}

class MyViewModel : ViewModel() {
    val mySurvey = survey<MyQuestion>()
    
    fun hello() {
        viewModelScope.launch {
            mySurvey.ask(MyQuestion()).collect { myAnswer ->
                doSomethingWith(myAnswer)
            }
        }
    }
}

class MyActivity : AppCompatActivity() {
    private val viewModel: MyViewModel by viewModels()

    fun onCreate(savedInstanceState: Bundle?) {
        answer(viewModel.mySurvey) { question ->
            MyAnswerTo(question)
        }
    }
}