code: public static void main(String[] args) {
      if (args.length != 0) {
        LOG.info("java -cp {} {}", RuntimeConstants.ALLUXIO_JAR,
            AlluxioProxyMonitor.class.getCanonicalName());
        LOG.warn("ignoring arguments");
      }
  
      HealthCheckClient client = new ProxyHealthCheckClient(
          NetworkAddressUtils.getBindAddress(NetworkAddressUtils.ServiceType.PROXY_WEB,
              new InstancedConfiguration(ConfigurationUtils.defaults())),
          () -> new ExponentialBackoffRetry(50, 100, 2));
      if (!client.isServing()) {
        System.exit(1);
      }
      System.exit(0);
    }
docs: Starts the Alluxio proxy monitor.
  
  @param args command line arguments, should be empty