NLog.Targets.FileTarget.RefreshFileArchive C# (CSharp) Method

        private void RefreshFileArchive()
        {
            var nullEvent = LogEventInfo.CreateNullEvent();
            string fileNamePattern = GetArchiveFileNamePattern(GetFullFileName(nullEvent), nullEvent);
            if (fileNamePattern == null)
            {
                InternalLogger.Debug("no RefreshFileArchive because fileName is NULL");
                return;
            }

            if (!ContainsFileNamePattern(fileNamePattern))
            {
                try
                {
                    fileArchive.InitializeForArchiveFolderPath(Path.GetDirectoryName(fileNamePattern));
                }
                catch (Exception exception)
                {

                    if (exception.MustBeRethrownImmediately())
                    {
                        throw;
                    }

                    //TODO NLog 5, check MustBeRethrown()

                    InternalLogger.Warn(exception, "Error while initializing archive folder.");
                }
            }
        }