/// <summary>
 /// Add the administrator for root collection.
 /// </summary>
 /// <remarks>
 /// Add the administrator for root collection associated with this account.
 /// </remarks>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The resource group name.
 /// </param>
 /// <param name='accountName'>
 /// The name of the account.
 /// </param>
 /// <param name='collectionAdminUpdate'>
 /// The collection admin update payload.
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task AddRootCollectionAdminAsync(this IAccountsOperations operations, string resourceGroupName, string accountName, CollectionAdminUpdate collectionAdminUpdate, CancellationToken cancellationToken = default(CancellationToken))
 {
     (await operations.AddRootCollectionAdminWithHttpMessagesAsync(resourceGroupName, accountName, collectionAdminUpdate, null, cancellationToken).ConfigureAwait(false)).Dispose();
 }