MainActivity.kt

class MainActivity : AppCompatActivity() {

   private lateinit var binding: ActivityMainBinding
   private lateinit var headerAdapter: HeaderAdapter
   private lateinit var footerAdapter: FooterAdapter
   private lateinit var listAdapter: ListAdapter

   override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)
        setupRecyclerViewAdapters()
   }

   fun setupRecyclerViewAdapters() {
        val headerAdapter = HeaderAdapter()
        val footerAdapter = FooterAdapter("Remarks from your data source")
        val usersAdapter = UsersListAdapter()
        usersAdapter.setUsersListData(someUsersList)

        val concatAdapter = ConcatAdapter(headerAdapter, usersAdapter, footerAdapter)
        binding.recyclerViewRv.layoutManager = LinearLayoutManager(this)
        binding.recyclerViewRv.adapter = adapter
   }
}