Microsoft.AspNetCore.SignalR.Transports.LongPollingTransport.AddTransportData C# (CSharp) Метод

        private void AddTransportData(PersistentResponse response)
        {
            if (_pollDelay != TimeSpan.Zero)
            {
                response.LongPollDelay = (long)_pollDelay.TotalMilliseconds;
            }
        }