/// <summary>Snippet for ListClusters</summary>
        public async Task ListClustersRequestObjectAsync()
        {
            // Snippet: ListClustersAsync(ListClustersRequest, CallSettings)
            // Create client
            ClusterControllerClient clusterControllerClient = await ClusterControllerClient.CreateAsync();

            // Initialize request argument(s)
            ListClustersRequest request = new ListClustersRequest
            {
                ProjectId = "",
                Region    = "",
                Filter    = "",
            };
            // Make the request
            PagedAsyncEnumerable <ListClustersResponse, Cluster> response = clusterControllerClient.ListClustersAsync(request);

            // Iterate over all response items, lazily performing RPCs as required
            await response.ForEachAsync((Cluster 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((ListClustersResponse page) =>
            {
                // Do something with each page of items
                Console.WriteLine("A page of results:");
                foreach (Cluster 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 <Cluster> 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 (Cluster 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;
            // End snippet
        }