/// <summary>Snippet for ListServicesAsync</summary>
        /// <remarks>
        /// This snippet has been automatically generated for illustrative purposes only.
        /// It may require modifications to work in your environment.
        /// </remarks>
        public async Task ListServicesRequestObjectAsync()
        {
            // Create client
            ServiceUsageClient serviceUsageClient = await ServiceUsageClient.CreateAsync();

            // Initialize request argument(s)
            ListServicesRequest request = new ListServicesRequest
            {
                Parent = "",
                Filter = "",
            };

            // Make the request
#pragma warning disable CS0612
            PagedAsyncEnumerable <ListServicesResponse, Service> response = serviceUsageClient.ListServicesAsync(request);
#pragma warning restore CS0612

            // Iterate over all response items, lazily performing RPCs as required
            await response.ForEachAsync((Service item) =>
            {
                // Do something with each item
                Console.WriteLine(item);
            });

            // Or iterate over pages (of server-defined size), performing one RPC per page
            await response.AsRawResponses().ForEachAsync((ListServicesResponse page) =>
            {
                // Do something with each page of items
                Console.WriteLine("A page of results:");
                foreach (Service item in page)
                {
                    // Do something with each item
                    Console.WriteLine(item);
                }
            });

            // Or retrieve a single page of known size (unless it's the final page), performing as many RPCs as required
            int            pageSize   = 10;
            Page <Service> singlePage = await response.ReadPageAsync(pageSize);

            // Do something with the page of items
            Console.WriteLine($"A page of {pageSize} results (unless it's the final page):");
            foreach (Service item in singlePage)
            {
                // Do something with each item
                Console.WriteLine(item);
            }
            // Store the pageToken, for when the next page is required.
            string nextPageToken = singlePage.NextPageToken;
        }