MainViewModel viewModel = ViewModelProviders.of(this).get(MainViewModel.class);
viewModel.makeQuery().observe(this, new androidx.lifecycle.Observer<ResponseBody>() {
    @Override
    public void onChanged(ResponseBody responseBody) {
        Log.d(TAG, "onChanged: this is a live data response!");
        try {
            Log.d(TAG, "onChanged: " + responseBody.string());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
});