How to get the absolute path to the WEB-INF directory in a background threa

I want to load a file from WEB-INF/templates/… in a background thread. Can I get somehow the path to the WEB-INF directory?

Thanks,
Andreas

You could try and use
((HttpServletRequest) VaadinRequest.getCurrent ()).getPathTranslated ()
to get to the real path of webapp and from there construct path to your resource into webapp/WEB-INF