NLog.Filters.FilterResult
Filter result.
Ignore = 2
The message should not be logged.
IgnoreFinal = 4
The message should not be logged and processing should be finished.
Log = 1
The message should be logged.
LogFinal = 3
The message should be logged and processing should be finished.
Neutral = 0
The filter doesn't want to decide whether to log or discard the message.