/// <summary>
 /// Backup the file server now.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='deviceName'>
 /// The device name.
 /// </param>
 /// <param name='fileServerName'>
 /// The file server name.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The resource group name
 /// </param>
 /// <param name='managerName'>
 /// The manager name
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task BackupNowAsync(this IFileServersOperations operations, string deviceName, string fileServerName, string resourceGroupName, string managerName, CancellationToken cancellationToken = default(CancellationToken))
 {
     (await operations.BackupNowWithHttpMessagesAsync(deviceName, fileServerName, resourceGroupName, managerName, null, cancellationToken).ConfigureAwait(false)).Dispose();
 }