System.Net.HttpWebRequest.GetDateHeaderHelper C# (CSharp) Метод

        private DateTime GetDateHeaderHelper(string headerName)
        {
#if DEBUG
            using (DebugThreadTracking.SetThreadKind(ThreadKinds.User | ThreadKinds.Async)) {
#endif
            string headerValue = _webHeaderCollection[headerName];

            if (headerValue == null)
            {
                return DateTime.MinValue; // MinValue means header is not present
            }
            return StringToDate(headerValue);
#if DEBUG
            }
#endif
        }