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