@Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        categoryViewModel = ViewModelProviders.of(this).get(CategoryViewModel.class);

        CombinedLiveData<Resource<List<Category>>, Resource<List<Category>>> categoryAndRegions = new CombinedLiveData<>(categoryViewModel.getCategories(Constants.NEWS_CATEGORY_SET), categoryViewModel.getCategories(Constants.CATEGORIES_REGIONS));

        categoryAndRegions.observe(getViewLifecycleOwner(), resourceResourcePair -> {
            if (resourceResourcePair != null) {
                if (resourceResourcePair.first.status == Resource.Status.LOADING || resourceResourcePair.second.status == Resource.Status.LOADING) {
                    loadingView.setVisibility(View.VISIBLE);
                }

                if (resourceResourcePair.first.status == Resource.Status.SUCCESS || resourceResourcePair.second.status == Resource.Status.SUCCESS) {
                    if (mIsRegionsView) {
                        sectionsAdapter.submitList(resourceResourcePair.second.data);
                    } else {
                        resourceResourcePair.first.data.add(0, new Category(
                                -1,
                                Constants.CATEGORIES_REGIONS,
                                getString(R.string.regions),
                                "",
                                "",
                                "",
                                "",
                                "",
                                "",
                                "",
                                "",
                                "",
                                ""));
                        sectionsAdapter.submitList(resourceResourcePair.first.data);
                    }
                }
            }
        });
    }