/// <summary>
        /// Creates a <see cref="VpnTunnelsClient"/> which uses the specified call invoker for remote operations.
        /// </summary>
        /// <param name="callInvoker">
        /// The <see cref="grpccore::CallInvoker"/> for remote operations. Must not be null.
        /// </param>
        /// <param name="settings">Optional <see cref="VpnTunnelsSettings"/>.</param>
        /// <returns>The created <see cref="VpnTunnelsClient"/>.</returns>
        internal static VpnTunnelsClient Create(grpccore::CallInvoker callInvoker, VpnTunnelsSettings settings = null)
        {
            gax::GaxPreconditions.CheckNotNull(callInvoker, nameof(callInvoker));
            grpcinter::Interceptor interceptor = settings?.Interceptor;

            if (interceptor != null)
            {
                callInvoker = grpcinter::CallInvokerExtensions.Intercept(callInvoker, interceptor);
            }
            VpnTunnels.VpnTunnelsClient grpcClient = new VpnTunnels.VpnTunnelsClient(callInvoker);
            return(new VpnTunnelsClientImpl(grpcClient, settings));
        }
        /// <summary>
        /// Constructs a client wrapper for the VpnTunnels service, with the specified gRPC client and settings.
        /// </summary>
        /// <param name="grpcClient">The underlying gRPC client.</param>
        /// <param name="settings">The base <see cref="VpnTunnelsSettings"/> used within this client.</param>
        public VpnTunnelsClientImpl(VpnTunnels.VpnTunnelsClient grpcClient, VpnTunnelsSettings settings)
        {
            GrpcClient = grpcClient;
            VpnTunnelsSettings    effectiveSettings = settings ?? VpnTunnelsSettings.GetDefault();
            gaxgrpc::ClientHelper clientHelper      = new gaxgrpc::ClientHelper(effectiveSettings);

            _callAggregatedList = clientHelper.BuildApiCall <AggregatedListVpnTunnelsRequest, VpnTunnelAggregatedList>(grpcClient.AggregatedListAsync, grpcClient.AggregatedList, effectiveSettings.AggregatedListSettings).WithGoogleRequestParam("project", request => request.Project);
            Modify_ApiCall(ref _callAggregatedList);
            Modify_AggregatedListApiCall(ref _callAggregatedList);
            _callDelete = clientHelper.BuildApiCall <DeleteVpnTunnelRequest, Operation>(grpcClient.DeleteAsync, grpcClient.Delete, effectiveSettings.DeleteSettings).WithGoogleRequestParam("project", request => request.Project).WithGoogleRequestParam("region", request => request.Region).WithGoogleRequestParam("vpn_tunnel", request => request.VpnTunnel);
            Modify_ApiCall(ref _callDelete);
            Modify_DeleteApiCall(ref _callDelete);
            _callGet = clientHelper.BuildApiCall <GetVpnTunnelRequest, VpnTunnel>(grpcClient.GetAsync, grpcClient.Get, effectiveSettings.GetSettings).WithGoogleRequestParam("project", request => request.Project).WithGoogleRequestParam("region", request => request.Region).WithGoogleRequestParam("vpn_tunnel", request => request.VpnTunnel);
            Modify_ApiCall(ref _callGet);
            Modify_GetApiCall(ref _callGet);
            _callInsert = clientHelper.BuildApiCall <InsertVpnTunnelRequest, Operation>(grpcClient.InsertAsync, grpcClient.Insert, effectiveSettings.InsertSettings).WithGoogleRequestParam("project", request => request.Project).WithGoogleRequestParam("region", request => request.Region);
            Modify_ApiCall(ref _callInsert);
            Modify_InsertApiCall(ref _callInsert);
            _callList = clientHelper.BuildApiCall <ListVpnTunnelsRequest, VpnTunnelList>(grpcClient.ListAsync, grpcClient.List, effectiveSettings.ListSettings).WithGoogleRequestParam("project", request => request.Project).WithGoogleRequestParam("region", request => request.Region);
            Modify_ApiCall(ref _callList);
            Modify_ListApiCall(ref _callList);
            OnConstruction(grpcClient, effectiveSettings, clientHelper);
        }
 partial void OnConstruction(VpnTunnels.VpnTunnelsClient grpcClient, VpnTunnelsSettings effectiveSettings, gaxgrpc::ClientHelper clientHelper);