public override void Invoke(AWSCredentials creds, RegionEndpoint region, int maxItems)
        {
            AmazonIoTSecureTunnelingConfig config = new AmazonIoTSecureTunnelingConfig();

            config.RegionEndpoint = region;
            ConfigureClient(config);
            AmazonIoTSecureTunnelingClient client = new AmazonIoTSecureTunnelingClient(creds, config);

            ListTunnelsResponse resp = new ListTunnelsResponse();

            do
            {
                ListTunnelsRequest req = new ListTunnelsRequest
                {
                    NextToken = resp.NextToken
                    ,
                    MaxResults = maxItems
                };

                resp = client.ListTunnels(req);
                CheckError(resp.HttpStatusCode, "200");

                foreach (var obj in resp.TunnelSummaries)
                {
                    AddObject(obj);
                }
            }while (!string.IsNullOrEmpty(resp.NextToken));
        }
        /// <summary>
        /// Initiates the asynchronous execution of the ListTunnels operation.
        /// </summary>
        ///
        /// <param name="request">Container for the necessary parameters to execute the ListTunnels operation on AmazonIoTSecureTunnelingClient.</param>
        /// <param name="callback">An AsyncCallback delegate that is invoked when the operation completes.</param>
        /// <param name="state">A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback
        ///          procedure using the AsyncState property.</param>
        ///
        /// <returns>An IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking EndListTunnels
        ///         operation.</returns>
        /// <seealso href="http://docs.aws.amazon.com/goto/WebAPI/iotsecuretunneling-2018-10-05/ListTunnels">REST API Reference for ListTunnels Operation</seealso>
        public virtual IAsyncResult BeginListTunnels(ListTunnelsRequest request, AsyncCallback callback, object state)
        {
            var options = new InvokeOptions();

            options.RequestMarshaller    = ListTunnelsRequestMarshaller.Instance;
            options.ResponseUnmarshaller = ListTunnelsResponseUnmarshaller.Instance;

            return(BeginInvoke(request, options, callback, state));
        }
        /// <summary>
        /// List all tunnels for an AWS account. Tunnels are listed by creation time in descending
        /// order, newer tunnels will be listed before older tunnels.
        /// </summary>
        /// <param name="request">Container for the necessary parameters to execute the ListTunnels service method.</param>
        ///
        /// <returns>The response from the ListTunnels service method, as returned by IoTSecureTunneling.</returns>
        /// <seealso href="http://docs.aws.amazon.com/goto/WebAPI/iotsecuretunneling-2018-10-05/ListTunnels">REST API Reference for ListTunnels Operation</seealso>
        public virtual ListTunnelsResponse ListTunnels(ListTunnelsRequest request)
        {
            var options = new InvokeOptions();

            options.RequestMarshaller    = ListTunnelsRequestMarshaller.Instance;
            options.ResponseUnmarshaller = ListTunnelsResponseUnmarshaller.Instance;

            return(Invoke <ListTunnelsResponse>(request, options));
        }
        /// <summary>
        /// List all tunnels for an AWS account. Tunnels are listed by creation time in descending
        /// order, newer tunnels will be listed before older tunnels.
        /// </summary>
        /// <param name="request">Container for the necessary parameters to execute the ListTunnels service method.</param>
        /// <param name="cancellationToken">
        ///     A cancellation token that can be used by other objects or threads to receive notice of cancellation.
        /// </param>
        ///
        /// <returns>The response from the ListTunnels service method, as returned by IoTSecureTunneling.</returns>
        /// <seealso href="http://docs.aws.amazon.com/goto/WebAPI/iotsecuretunneling-2018-10-05/ListTunnels">REST API Reference for ListTunnels Operation</seealso>
        public virtual Task <ListTunnelsResponse> ListTunnelsAsync(ListTunnelsRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
        {
            var options = new InvokeOptions();

            options.RequestMarshaller    = ListTunnelsRequestMarshaller.Instance;
            options.ResponseUnmarshaller = ListTunnelsResponseUnmarshaller.Instance;

            return(InvokeAsync <ListTunnelsResponse>(request, options, cancellationToken));
        }