docs: public static void installAsShutdownHook(Logger logger, long delayMillis) {
  		checkArgument(delayMillis >= 0, "delay must be >= 0");
  
  		// install the blocking shutdown hook
  		Thread shutdownHook = new JvmShutdownSafeguard(delayMillis);
  		ShutdownHookUtil.addShutdownHookThread(shutdownHook, JvmShutdownSafeguard.class.getSimpleName(), logger);
  	}