/// <summary>
/// Gets all media folders available in the specified
/// folder.
/// </summary>
/// <param name="folderId">The optional folder id</param>
/// <returns>The available media folders</returns>
public static IEnumerable <MediaFolder> GetAllFolders(this MediaService service, Guid?folderId = null)
{
return(service.GetAllFoldersAsync(folderId).GetAwaiter().GetResult());
}
