/// <summary>
 /// Updates a service principal in the directory.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='objectId'>
 /// The object ID of the service principal to delete.
 /// </param>
 /// <param name='parameters'>
 /// Parameters to update a service principal.
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task UpdateAsync(this IServicePrincipalsOperations operations, string objectId, ServicePrincipalUpdateParameters parameters, CancellationToken cancellationToken = default(CancellationToken))
 {
     (await operations.UpdateWithHttpMessagesAsync(objectId, parameters, null, cancellationToken).ConfigureAwait(false)).Dispose();
 }