Disabling extensions

[HRJet]

Hi,

How do I disable some or all of the nashorn extensions? I am
especially interested in disabling the creation of attributes such as:
exit, quit, load, etc.

I can confirm that this works:

  jsContext = jsEngine.getContext()
  scope = jsContext.getAttributesScope("exit")
  jsContext.removeAttribute("exit", scope)

However, it would be nicer to disable their creation itself.

thanks,
HRJ