public void Pause()
        {
            if (handle == Types.INVALID_HANDLE)
            {
                return;
            }

            HvrPlayerInterfaceAPI.Asset_Pause(handle);

            if (onPause != null)
            {
                onPause();
            }
        }
        public void Stop()
        {
            if (handle == Types.INVALID_HANDLE)
            {
                return;
            }

            HvrPlayerInterfaceAPI.Asset_Pause(handle);
            HvrPlayerInterfaceAPI.Asset_Seek(handle, 0);

            if (onStop != null)
            {
                onStop();
            }
        }