code: func (l *Logger) Noticef(format string, v ...interface{}) {
  	if l.getLevel() <= Notice {
  		l.getHandler().Log(l.name, Notice, fmt.Sprintf(format, v...), 1)
  	}
  }
docs: // Noticef logs a format string with values if the logger's level is notice or
  // even more permissive.