code: func LogLevel() string {
  	envLevel := os.Getenv(EnvLog)
  	if envLevel == "" {
  		return ""
  	}
  
  	logLevel := "TRACE"
  	if isValidLogLevel(envLevel) {
  		// allow following for better ux: info, Info or INFO
  		logLevel = strings.ToUpper(envLevel)
  	} else {
  		log.Printf("[WARN] Invalid log level: %q. Defaulting to level: TRACE. Valid levels are: %+v",
  			envLevel, ValidLevels)
  	}
  
  	return logLevel
  }
docs: // LogLevel returns the current log level string based the environment vars