code: public static void main(String[] args) {
      if (args.length != 0) {
        LOG.info("java -cp {} {}", RuntimeConstants.ALLUXIO_JAR,
            AlluxioProxy.class.getCanonicalName());
        System.exit(-1);
      }
  
      if (!ConfigurationUtils.masterHostConfigured(ServerConfiguration.global())) {
        ProcessUtils.fatalError(LOG,
            ConfigurationUtils.getMasterHostNotConfiguredMessage("Alluxio proxy"));
      }
  
      CommonUtils.PROCESS_TYPE.set(CommonUtils.ProcessType.PROXY);
      ProxyProcess process = ProxyProcess.Factory.create();
      ProcessUtils.run(process);
    }
docs: Starts the Alluxio proxy.
  
  @param args command line arguments, should be empty