/// <summary>
        /// Instructs the cloud recognition service to execute a FindMarker request.
        /// </summary>
        /// <param name="imageBase64">Image base64.</param>
        public void ExecuteFindMarkerRequest()
        {
            if (_findMarkerRequestRunning)
            {
                return;
            }

            _findMarkerRequestRunning = true;

            int size = PikkartARCore.GetUpdatedServerBuffer(_nativeArray);

            if (size == 0)
            {
                _findMarkerRequestRunning = false;
                return;
            }
            string imageDescriptor = Marshal.PtrToStringAnsi(_nativeArray);

            PikkartARHelper.Instance.LaunchCoroutine(_cloudRecognitionService.FindMarker(imageDescriptor, FindMarkerCallbackOK, FindMarkerCallbackKO));
        }