/// <summary>Snippet for ListCallsAsync</summary>
        public async Task ListCallsRequestObjectAsync()
        {
            // Snippet: ListCallsAsync(ListCallsRequest, CallSettings)
            // Create client
            CallsClient callsClient = await CallsClient.CreateAsync();

            // Initialize request argument(s)
            ListCallsRequest request = new ListCallsRequest
            {
                ParentAsProjectName = ProjectName.FromProject("[PROJECT]"),
                Filter = "",
            };
            // Make the request
            PagedAsyncEnumerable <ListCallsResponse, Call> response = callsClient.ListCallsAsync(request);

            // Iterate over all response items, lazily performing RPCs as required
            await response.ForEachAsync((Call 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((ListCallsResponse page) =>
            {
                // Do something with each page of items
                Console.WriteLine("A page of results:");
                foreach (Call 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 <Call> 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 (Call 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
        }
 /// <summary>
 /// Lists the Calls of the specified project.
 /// List returns Calls sorted by create_time descending.
 ///
 /// The caller must have `voice.calls.list` permission on the project.
 /// </summary>
 /// <param name="request">The request object containing all of the parameters for the API call.</param>
 /// <param name="callSettings">If not null, applies overrides to this RPC call.</param>
 /// <returns>A pageable asynchronous sequence of <see cref="Call"/> resources.</returns>
 public override gax::PagedAsyncEnumerable <ListCallsResponse, Call> ListCallsAsync(ListCallsRequest request, gaxgrpc::CallSettings callSettings = null)
 {
     Modify_ListCallsRequest(ref request, ref callSettings);
     return(new gaxgrpc::GrpcPagedAsyncEnumerable <ListCallsRequest, ListCallsResponse, Call>(_callListCalls, request, callSettings));
 }
 partial void Modify_ListCallsRequest(ref ListCallsRequest request, ref gaxgrpc::CallSettings settings);
 /// <summary>
 /// Lists the Calls of the specified project.
 /// List returns Calls sorted by create_time descending.
 ///
 /// The caller must have `voice.calls.list` permission on the project.
 /// </summary>
 /// <param name="request">The request object containing all of the parameters for the API call.</param>
 /// <param name="callSettings">If not null, applies overrides to this RPC call.</param>
 /// <returns>A pageable asynchronous sequence of <see cref="Call"/> resources.</returns>
 public virtual gax::PagedAsyncEnumerable <ListCallsResponse, Call> ListCallsAsync(ListCallsRequest request, gaxgrpc::CallSettings callSettings = null) =>
 throw new sys::NotImplementedException();