/// <summary>
 /// Start a Service.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The name of the resource group that contains the resource. You can obtain
 /// this value from the Azure Resource Manager API or the portal.
 /// </param>
 /// <param name='serviceName'>
 /// The name of the Service resource.
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task BeginStartAsync(this IServicesOperations operations, string resourceGroupName, string serviceName, CancellationToken cancellationToken = default(CancellationToken))
 {
     (await operations.BeginStartWithHttpMessagesAsync(resourceGroupName, serviceName, null, cancellationToken).ConfigureAwait(false)).Dispose();
 }