System.Net.HttpListener.CleanupV2Config C# (CSharp) Method

        private void CleanupV2Config()
        {
            //
            // If we never setup V2, just return.
            //
            if (!_V2Initialized)
            {
                return;
            }

            //
            // V2 stopping sequence:
            // 1. Detach request queue from url group - Done in Stop()/Abort()
            // 2. Remove urls from url group - Done in Stop()
            // 3. Close request queue - Done in Stop()/Abort()
            // 4. Close Url group.
            // 5. Close server session.

            Debug.Assert(_urlGroupId != 0, "HttpCloseUrlGroup called with invalid url group id");

            uint statusCode = Interop.HttpApi.HttpCloseUrlGroup(_urlGroupId);

            if (statusCode != Interop.HttpApi.ERROR_SUCCESS)
            {
                if (NetEventSource.IsEnabled) NetEventSource.Error(this, $"CloseV2Config {SR.Format(SR.net_listener_close_urlgroup_error, statusCode)}");
            }
            _urlGroupId = 0;

            Debug.Assert(_serverSessionHandle != null, "ServerSessionHandle is null in CloseV2Config");
            Debug.Assert(!_serverSessionHandle.IsInvalid, "ServerSessionHandle is invalid in CloseV2Config");

            _serverSessionHandle.Dispose();
        }