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