protected virtual void OnDestroy()
        {
            for (int i = 0; i < refSharedWebpTextures.Count; i++)
            {
                SharedWebpTexture.UnrefSharedWebpTexture(refSharedWebpTextures [i]);
            }

            refSharedWebpTextures.Clear();
        }
        protected void UnrefCurrentWebpTextureOnChange()
        {
            if (Application.isPlaying)
            {
                for (int i = 0; i < refSharedWebpTextures.Count; i++)
                {
                    SharedWebpTexture.UnrefSharedWebpTexture(refSharedWebpTextures [i]);
                }

                refSharedWebpTextures.Clear();
            }
        }