whats is the equvalent way to the asp.net core SignalR way to defined the WebSocket close time out

endpoints.MapHub<NotificationsHub>("/notificationsHub", confoptions =>
            {
                confoptions.WebSockets.CloseTimeout = TimeSpan.FromHours(24);
            });

in order defined the WebSocket close time out in ASP.NET SignalR (.NET Framework)