async public void ExcellaGetEntrances(ExcellaGetNearbyStationRequest queryRequest)
        {
            var client = new HttpClient();
            var queryString = HttpUtility.ParseQueryString(string.Empty);

            // Request headers
            client.DefaultRequestHeaders.Add("api_key", WMATAAPIKEY);

            // Request parameters
            queryString["Lat"] = queryRequest.latitude.ToString();
            queryString["Lon"] = queryRequest.longitude.ToString();
            queryString["Radius"] = "10000";
            var uri = "https://api.wmata.com/Rail.svc/StationEntrances&" + queryString;

            var response = await client.GetAsync(uri);
        }
        public void ExcellaGetEntrancesXML(ExcellaGetNearbyStationRequest queryRequest)
        {

            string text;
            var queryString = "?Lat=" + queryRequest.latitude + "Lon=" + queryRequest.longitude;
            var request = WebRequest.Create(WMATAGETENTRANCES + queryString);
            request.Headers.Add("api_key", WMATAAPIKEY);
            request.ContentType = "application/json; charset=utf-8";


            var response = (HttpWebResponse)request.GetResponse();
            using (var sr = new StreamReader(response.GetResponseStream()))
            {
                text = sr.ReadToEnd();
            }
            stations = JsonConvert.DeserializeObject<AllStations>(text);
        }