static AutoCloseable serverSocketFactory_autoUpdate() { 
  temp new CloseablesHolder resources;
  new FileWatchService watchService;
  resources.add(watchService);
  
  File dir = javaxSecretDir();
  watchService.addRecursiveListener(dir, f -> enter {
    if (fileNameIs(f, "keystore.p12")) {
      print("Key store changed, reloading certificates: " + f);
      serverSocketFactory_botCompanyEtc_update();
    }
  });
  print("Watching " + dir + " for keystore changes");
  ret resources.takeOut(watchService);
}