/// <summary>
 /// Deletes the specified Content Delivery Network service.
 /// </summary>
 /// <param name="cdnService">The <see cref="IContentDeliveryNetworkService"/> service instance.</param>
 /// <param name="serviceId">The service identifier.</param>
 /// <exception cref="ArgumentNullException">If <paramref name="serviceId"/> is <see langword="null"/> or empty.</exception>
 public static void DeleteService(this IContentDeliveryNetworkService cdnService, string serviceId)
 {
     cdnService.DeleteServiceAsync(serviceId).ForceSynchronous();
 }