code: func validateMatchClient(value string) bool {
  	match_client := [5]string{"MAC_ADDRESS", "CLIENT_ID", "RESERVED", "CIRCUIT_ID", "REMOTE_ID"}
  
  	for _, val := range match_client {
  		if val == value {
  			return true
  		}
  	}
  	return false
  }
docs: // validation  for match_client