logging.go
func (logger *Logger) Emergencyf(format string, a ...interface{}) {
	logger.log(EMERGENCY, format, a...)
}
func (logger *Logger) Emergencyf(format string, a ...interface{}) {
	logger.log(EMERGENCY, format, a...)
}
func ( logger * Logger ) Emergencyf ( format string , a ... interface { } ) { logger . log ( EMERGENCY , format , a ... ) }
// Emergencyf logs provided message with formatting in EMERGENCY level.
Emergencyf logs provided message with formatting in EMERGENCY level .