parcelable
fun <T : Parcelable> NonNullSavedStateHandleKey.Companion.parcelable(key: String, defaultValue: T): NonNullSavedStateHandleKey<T>
fun <T : Parcelable> NullableSavedStateHandleKey.Companion.parcelable(key: String, defaultValue: T? = null): NullableSavedStateHandleKey<T>