public static async Task <Stream> BigThumbnailAsync(this TimeLapsedImage image)
 {
     return(await image.BigThumbnailAsync(image.Name));
 }
        public static async Task <Stream> BigThumbnailAsync(this TimeLapsedImage image, int index)
        {
            var name = image.IndexName(index);

            return(await image.BigThumbnailAsync(name));
        }