/// <summary>
/// Adds a user to the allowed list of users to access this LUIS
/// application.Users are added using their email address.
/// </summary>
/// <param name='operations'>
/// The operations group for this extension method.
/// </param>
/// <param name='azureRegion'>
/// Supported Azure regions for Cognitive Services endpoints. Possible values
/// include: 'westus', 'westeurope'
/// </param>
/// <param name='appId'>
/// Format - guid. The application ID.
/// </param>
/// <param name='body'>
/// A JSON object containing the user's email address.
/// </param>
/// <param name='cancellationToken'>
/// The cancellation token.
/// </param>
public static async Task AddUserToAccessListAsync(this IPermissions operations, AzureRegions azureRegion, string appId, object body = default(object), CancellationToken cancellationToken = default(CancellationToken))
{
(await operations.AddUserToAccessListWithHttpMessagesAsync(azureRegion, appId, body, null, cancellationToken).ConfigureAwait(false)).Dispose();
}