override fun onCreate(savedInstanceState: Bundle?) {
    // ...
    viewModel.viewState.observe(this, Observer { render(it) })
}

private fun render(viewState: MSMovieViewState?) {
    viewState.searchBoxText?.let { ms_mainScreen_searchText.setText(it) }
    ms_mainScreen_title.text = viewState.searchedMovieTitle
    ms_mainScreen_rating.text = viewState.searchedMovieRating
    listAdapter.submitList(viewState.adapterList)
    // render other views
}