Activity.kt

     viewModel.movies.observe(this, Observer { list ->
            rvMovies.adapter = MoviesAdapter(list) {
                flowController.openMovieDetail(it)
            }
        })

        viewModel.progress.observe(this, Observer { visible ->
            progress.show(visible)
        })
        
       viewModel.error.observe(this, Observer { throwable ->
            Toast(thowable.message)
        })