paging library with Room in Android Architecture Component

MyActivity.java

class MyActivity extends AppCompatActivity {
    @Override
    public void onCreate(Bundle savedState) {
        super.onCreate(savedState);
        MyViewModel viewModel = ViewModelProviders.of(this).get(MyViewModel.class);
        RecyclerView recyclerView = findViewById(R.id.user_list);
        UserAdapter<User> adapter = new UserAdapter();
        viewModel.usersList.observe(this, pagedList -> adapter.setList(pagedList));
        recyclerView.setAdapter(adapter);
    }
}