BaseViewModel.kt

abstract class BaseViewModel : ViewModel() {
    val actionStream = PublishSubject.create<Action>()
    private val compositeDisposable: CompositeDisposable = CompositeDisposable()

    protected fun Disposable.track() {
        compositeDisposable.add(this)
    }

    override fun onCleared() {
        compositeDisposable.clear()
    }
}