log_adapter.go
func (la *LogAdapter) Fatal(msg string) error {
	return la.Log(LevelFatal, nil, msg)
}
func (la *LogAdapter) Fatal(msg string) error {
	return la.Log(LevelFatal, nil, msg)
}
/*
Fatal uses msg as a format string with subsequent parameters as values and logs
the resulting message to all added loggers at LogLevel.LevelFatal
*/