/// <summary>
        /// Raises the destroy event.
        /// </summary>
        void OnDestroy()
        {
            if (sourceToMatHelper != null)
            {
                sourceToMatHelper.Dispose();
            }

            if (faceLandmarkDetector != null)
            {
                faceLandmarkDetector.Dispose();
            }

#if UNITY_WEBGL
            if (getFilePath_Coroutine != null)
            {
                StopCoroutine(getFilePath_Coroutine);
                ((IDisposable)getFilePath_Coroutine).Dispose();
            }
#endif
        }