public void getShops(final String cityName, final String mallName, final SolidCallback<List<Shops>> callback){
        SolidClient solidClient = new SolidClient();
        solidClient.getShops(new Callback<GetListOfMallsResponse>() {
            @Override
            public void onResponse(Call<GetListOfMallsResponse> call, Response<GetListOfMallsResponse> response) {
                List<Shops> shops = new ArrayList<>();
                if (response.isSuccessful()) {

                    for(int i = 0; i < response.body().getCities().size(); i++){
                        if(response.body().getCities().get(i).getName().equals(cityName)){

                            for(int j = 0; j < response.body().getCities().get(i).getMalls().size(); j++){
                                if (response.body().getCities().get(i).getMalls().get(j).getName().equals(mallName)) {
                                    shops.addAll(response.body().getCities().get(i).getMalls().get(j).getShops());
                                }
                            }
                        }
                    }
                }

                callback.onSuccess(shops);
            }

            @Override
            public void onFailure(Call<GetListOfMallsResponse> call, Throwable t) {
                callback.onFailure(t);
            }
        });
    }