func Debugf(format string, args ...interface{}) {
	logger.Output(2, LevelDebug, fmt.Sprintf(format, args...))
}
func Debugf(format string, args ...interface{}) {
	logger.Output(2, LevelDebug, fmt.Sprintf(format, args...))
}
func Debugf ( format string , args ... interface { } ) { logger . Output ( 2 , LevelDebug , fmt . Sprintf ( format , args ... ) ) }
// Debugf records the log with debug level
Debugf records the log with debug level