public async Task GetAndSaveCargoByName(char firstLetter)
        {
            var request = HttpConnector.CreateGetConnection(new Uri($"http://tarifgd.ru/tar_online2/getgruz.php?buk={firstLetter}&poiskvh=1&view=xml"));

            var response = await HttpConnector.Client.SendAsync(request);

            if (response.IsSuccessStatusCode)
            {
                var xmlResponse = await response.Content.ReadAsStreamAsync();

                var cargoSerializer = new XmlSerializer(typeof(CargoXml));

                var cargoXml = (CargoXml)cargoSerializer.Deserialize(xmlResponse);

                if (cargoXml.CargoList != null)
                {
                    foreach (var cargo in cargoXml.CargoList)
                    {
                        await _cargoService.Save(cargo);
                    }
                    Application.Current.Properties.Add("cargoSavedByName" + firstLetter, 1);
                    await Application.Current.SavePropertiesAsync().ConfigureAwait(false);
                }
            }
        }