System.Net.Mail.SmtpNegotiateAuthenticationModule.CloseContext C# (CSharp) Method

        public void CloseContext(object sessionCookie)
        {
            NTAuthentication clientContext = null;
            lock (_sessions)
            {
                if (_sessions.TryGetValue(sessionCookie, out clientContext))
                {
                    _sessions.Remove(sessionCookie);
                }
            }
            if (clientContext != null)
            {
                clientContext.CloseContext();
            }
        }