public Task <WeatherForecast[]> GetForecastAsync(DateTime startDate)
        {
            var       channel  = GrpcChannel.ForAddress("https://localhost:5001");
            var       client   = new Greeter.GreeterClient(channel);
            DataReply response = client.GetData(new DataRequest()
            {
                Name = "Berlin"
            });
            RootObject             res = Newtonsoft.Json.JsonConvert.DeserializeObject <RootObject>(response.Message);
            List <WeatherForecast> lstWeatherForecast = new List <WeatherForecast>();

            foreach (Location local in res.observations.location)
            {
                foreach (Observation obs in local.observation)
                {
                    WeatherForecast oWeather = new WeatherForecast();
                    oWeather.Date         = res.feedCreation;
                    oWeather.TemperatureC = obs.temperature;
                    oWeather.Summary      = string.Format("latitude  {0}, longitude {1}", local.latitude, local.longitude);
                    lstWeatherForecast.Add(oWeather);
                }
            }
            return(Task.FromResult(lstWeatherForecast.ToArray()));
        }