LogWriter return the original log writer used for a logr.LogSink wrapping logrus.

New will return a new logr.Logger created from a logrus.FieldLogger.

SetFormatter sets the logrus formatter for a sink wrapping a logrus.Logger.

WithFormatter will set the FormatFunc to use.

WithName will set an initial name instead of having to call `WithName` on the logger itself after constructing it.

WithReportCaller will enable reporting of the caller.

FieldKeyLogger is the name of the field used to store the logr logger name.

FormatFunc is the function to format log values with for non primitive data.

Option is options to give when construction a logrusr logger.