/// <summary>
/// Add a list of users to a group
/// </summary>
/// <param name='operations'>
/// The operations group for this extension method.
/// </param>
/// <param name='groupId'>
/// </param>
/// <param name='users'>
/// The list of users to add to the group
/// </param>
/// <param name='cancellationToken'>
/// The cancellation token.
/// </param>
public static async Task AddUsersToGroupAsync(this IGroups operations, int groupId, IList <int?> users, CancellationToken cancellationToken = default(CancellationToken))
{
(await operations.AddUsersToGroupWithHttpMessagesAsync(groupId, users, null, cancellationToken).ConfigureAwait(false)).Dispose();
}