code: func NewLager(log *logger) Logger {
  	var minLagerLogLevel lager.LogLevel
  	switch log.LogLevel {
  	case DEBUG:
  		minLagerLogLevel = lager.DEBUG
  	case INFO:
  		minLagerLogLevel = lager.INFO
  	case ERROR:
  		minLagerLogLevel = lager.ERROR
  	case FATAL:
  		minLagerLogLevel = lager.FATAL
  	default:
  		panic(fmt.Errorf("unknown log level: %s", log.LogLevel))
  	}
  
  	logger := lager.NewLogger(log.Name)
  	logger.RegisterSink(lager.NewWriterSink(log.Writer, minLagerLogLevel))
  	log.Logger = logger
  
  	return log
  }
docs: //NewLager - constructor for a Logger object