Как добавить данные в ListFragment android kotlin?

Как добавить данные для ListFragment?

class WorkoutListFragment : ListFragment() {

// TODO: Customize parameters
private var columnCount = 1

private var listener: OnListFragmentInteractionListener? = null

override fun onCreateView(
    inflater: LayoutInflater, container: ViewGroup?,
    savedInstanceState: Bundle?
): View? {
    val view = inflater.inflate(R.layout.fragment_workout_list, container, false)

    // Set the adapter
    if (view is RecyclerView) {
        with(view) {
            layoutManager = when {
                columnCount <= 1 -> LinearLayoutManager(context)
                else -> GridLayoutManager(context, columnCount)
            }
            adapter = MyworkoutRecyclerViewAdapter(DummyContent.ITEMS, listener)
        }
    }
    return view
}

override fun onActivityCreated(savedInstanceState: Bundle?) {
    super.onActivityCreated(savedInstanceState)
    var workouts:Array<Workout> = arrayOf(
        Workout("The Limb Loosener", "5 Handstand push-ups\n10 1-legend squarts\n15 Pull-ups"),
        Workout("Care agony", "100 pull-ups\n100 Push-ups\n100 Sit-ups\n100 Squarts"),
        Workout("The wimp Special", "5 Pull-ups\n10 Push-ups\n15 Squarts"),
        Workout("Strength and Length", "500 meter run\n21 x 1.5 pood kettleball swing\n21 x pull-ups")
    )
    val names = arrayOfNulls<String>(4)
    for(i in workouts.indices) {
        names[i] = workouts[i].getName()
    }
    var adapter: ArrayAdapter<String?> = ArrayAdapter(
        layoutInflater.context,
        android.R.layout.simple_list_item_1,
        names
    )
    setAdapter(adapter)
}

override fun onAttach(context: Context) {
    super.onAttach(context)
    if (context is OnListFragmentInteractionListener) {
        listener = context
    } else {
        throw RuntimeException(context.toString() + " must implement OnListFragmentInteractionListener")
    }
}
override fun onDetach() {
    super.onDetach()
    listener = null
}
interface OnListFragmentInteractionListener {
    // TODO: Update argument type and name
    fun onListFragmentInteraction(item: DummyItem?)
}

}

ошибка возникает вот здесь setListAdapter (adapter) setListAdapter подсвечивается красным