ClassicAdapter

class ClassicAdapter : RecyclerView.Adapter<ClassicHolder>() {

    private val viewModel = PersonItemViewModel()

    private val data: List<Person>
        get() = viewModel.data

    fun setData(persons: List<Person>) {
        viewModel.data = persons
        notifyDataSetChanged()
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ClassicHolder =
        ClassicHolder.create(parent)

    override fun getItemCount(): Int = data.size

    override fun onBindViewHolder(holder: ClassicHolder, position: Int) {
        holder.bind(viewModel, position)
    }
}