public FromServerToClientData Request(FromClientToServerData request)
        {
            FromServerToClientData response = new FromServerToClientData();

            response.Text = "Responding to: " + request.Text;

            return(response);
        }
        public async Task RequestWithCallbackAsync(FromClientToServerData request)
        {
            FromServerToClientData response = new FromServerToClientData();

            response.Text = "Responding to: " + request.Text;

            await Task.Delay(TimeSpan.FromSeconds(5));

            Clients.Others.OthersCallback(response);
        }
        public async Task <FromServerToClientData> RequestAsync(FromClientToServerData request)
        {
            FromServerToClientData response = new FromServerToClientData();

            response.Text = "Responding to: " + request.Text;

            await Task.Delay(TimeSpan.FromSeconds(5));

            return(response);
        }