/// <summary>
/// Returns a string containing a comma separated list of the different urls.
/// </summary>
/// <param name="imageSizes"></param>
/// <param name="baseMediaUrlOptions"></param>
/// <returns></returns>
private static string GetUrlsString(MediaItem mediaItem, ImageSizeList imageSizes, MediaUrlOptions baseMediaUrlOptions = null)
{
return string.Join(", ", imageSizes.Select(imgSize => GetUrl(mediaItem, imgSize.GetMediaUrlOptions(baseMediaUrlOptions))));
}