protected async override Task <object> OnPerform()
        {
            var response = await _fuelPumpRestClient.LoadPrices(_grouped);

            var data = await response.Content.ReadAsStringAsync();

            switch (response.StatusCode)
            {
            case HttpStatusCode.OK:
                var contract = new DeSerializer().MapFuelPrices(data);
                var entity   = new Mapper().MapFuelPrices(contract);
                entity.IsGrouped = _grouped;
                return(entity);

            default:
                return(await HandleExceptions(response));
            }
        }