public async Task <SensorContainer> GetSensorContainerWithRetryAsync(bool retry = true)
        {
            SensorContainer container = null;

            try
            {
                container = await GetSensorContainerAsync(_token);
            }
            catch (AuthorizationException)
            {
                if (retry)
                {
                    await RenewAuthToken();

                    container = await GetSensorContainerAsync(_token);
                }
                else
                {
                    throw;
                }
            }
            catch (Exception)
            {
                throw;
            }
            return(container);
        }
        public async Task <SensorContainer> GetSensorContainerAsync(string token)
        {
            SensorContainer container = null;

            HttpClient client = this.GetHttpClientToken(token);

            HttpResponseMessage response = await client.GetAsync(_serverUrl + "sensors/");

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

            switch (response.StatusCode)
            {
            case System.Net.HttpStatusCode.OK:

                Debug.WriteLine(content);
                container = JsonConvert.DeserializeObject <SensorContainer>(content);
                break;

            case System.Net.HttpStatusCode.Unauthorized:
                throw new AuthorizationException("Unknown token");

            default:
                throw new Exception(content);
            }
            return(container);
        }