code: public static void start(String[] args, String relativeResourcePath, boolean finalizeRestRegistration) {
      long time0 = System.currentTimeMillis();
      // Fire up the H2O Cluster
      H2O.main(args);
  
      H2O.registerResourceRoot(new File(relativeResourcePath + File.separator + "h2o-web/src/main/resources/www"));
      H2O.registerResourceRoot(new File(relativeResourcePath + File.separator + "h2o-core/src/main/resources/www"));
      ExtensionManager.getInstance().registerRestApiExtensions();
      if (!H2O.ARGS.disable_web) {
        if (finalizeRestRegistration) {
          H2O.startServingRestApi();
        }
      }
  
      long timeF = System.currentTimeMillis();
      Log.info("H2O started in " + (timeF - time0) + "ms");
      if (!H2O.ARGS.disable_web) {
        Log.info("");
        Log.info("Open H2O Flow in your web browser: " + H2O.getURL(NetworkInit.h2oHttpView.getScheme()));
        Log.info("");
      }
    }
docs: Start H2O node.
  
  @param args  H2O parameters
  @param relativeResourcePath  FIXME remove it
  @param finalizeRestRegistration  close registration of REST API