public static int Main(string[] args)
        {
            if (args.Length == 0)
            {
                Console.WriteLine("Error: please specify a project ID");
                return(1);
            }
            string projectId = args[0];
            string location  = Environment.GetEnvironmentVariable(LocationEnvironmentVariable);

            if (string.IsNullOrEmpty(location))
            {
                Console.WriteLine($"Error: please specify a project location in {LocationEnvironmentVariable} environment variable");
                return(1);
            }

            LocationName locationName = LocationName.FromProjectLocation(args[0], location);

            // Create client
            CloudTasksClient client = CloudTasksClient.Create();
            var queues = client.ListQueues(locationName);

            foreach (var queue in queues)
            {
                Console.WriteLine(queue.Name);
            }
            Console.WriteLine("Smoke test passed OK");
            return(0);
        }