Firestore addSnapshotListener with LifecycleOwner - Kotlin, Android

fun Query.addSnapshotListener(lifecycleOwner: LifecycleOwner, listener: (QuerySnapshot?, FirebaseFirestoreException?) -> Unit) {    val registration = addSnapshotListener(listener)    lifecycleOwner.lifecycle.addObserver(object : LifecycleObserver {        @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)        fun onDestroy() {            registration.remove()            lifecycleOwner.lifecycle.removeObserver(this)        }    })}fun DocumentReference.addSnapshotListener(owner: LifecycleOwner, listener: (DocumentSnapshot?, FirebaseFirestoreException?) -> Unit): ListenerRegistration {    val registration = addSnapshotListener(listener)    owner.lifecycle.addObserver(object : LifecycleObserver {        @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)        fun onDestroy() {            registration.remove()            owner.lifecycle.removeObserver(this)        }        /*        @OnLifecycleEvent(Lifecycle.Event.ON_STOP)        fun onStop() {        }         */    })    return registration}

val lifecylerOwner = ... // Activity or Fragmentval docRef = ...docRef.addSnapshotListener(this) { documentSnapshot, firebaseFirestoreException ->    // do something}