/// <summary>
        /// Fetch sensor history within the timespan and report the number of results.
        /// Check private variables 'startTime' and 'endTime' for the timespan
        /// and adjust these as needed!
        /// </summary>
        private static async Task GetSensorHistoryCount(string sensorId)
        {
            Console.WriteLine("Test /api/sensor/history");

            Console.WriteLine("Get Sensor History (y/n)? ");
            string input = Console.ReadLine();

            if (input == "y" || input == "Y")
            {
                // Sample JSON to send
                JObject json = new JObject {
                    ["sensorId"]  = sensorId,
                    ["startTime"] = startTime,
                    ["endTime"]   = endTime
                };

                try {
                    List <SensorHistoryLog> logs = await SensorApi.SensorHistory(json.ToString());

                    Console.WriteLine("Number of results: " + logs.Count + "\n");
                } catch (Exception ex) {
                    Console.WriteLine("Method Error: " + ex.Message + "\n");
                }
            }
        }