loadFavourites.kt

 override fun loadFavourites() {
        compositeDisposable.add(viewModel.getFavouritesFromBackend()
            .subscribe {
                if (it.isEmpty()) {
                    showFavouritesEmpty()
                } else {
                    updateFavouritesListener?.updateFavourites(it)
                    loadData(it)
                    showOtherAssetItems()
                }
            })
    }