kotlin fun Fragment.onCreate(function: () -> Unit) { lifecycle.addObserver(object : LifecycleObserver { @OnLifecycleEvent(Lifecycle.Event.ON_CREATE) fun onCreate() { function.invoke() } }) } kotlin val Fragment.viewBinder: ViewBinder get() = ViewBinder(view!!) kotlin fun Fragment.putArguments(argsBuilder: Bundle.() -> Unit) { arguments = Bundle().apply(argsBuilder) }