docs: private static boolean fraudDetect(WireRequest request) {
      String logMessage;
  
      boolean fraudulent = FRAUDULENT_CUSTOMERS.contains(request.getCustomerId());
  
      if (fraudulent) {
        logMessage = String.format("Rejected fraudulent customer %s",
            request.getCustomerId());
        LOG.warning(logMessage);
      } else {
        logMessage = String.format("Accepted request for $%d from customer %s",
            request.getAmount(),
            request.getCustomerId());
        LOG.info(logMessage);
      }
  
      return !fraudulent;
    }