public static void Initialize(FpCeptonSensorErrorCallback cb, ControlFlags control_flags = 0)
        {
            SDKOptions opt = SDKOptions.Create();

            opt.control_flags = control_flags;
            _E(_Initialize(SDK_VERSION, ref opt, cb, IntPtr.Zero));
            // Start listening to image points
            ListenImageFrames(imageDataCallback, IntPtr.Zero);
        }
 private static extern SensorErrorCode _Initialize(int ver, ref SDKOptions options,
                                                   FpCeptonSensorErrorCallback cb, IntPtr user_data);