/* if (lastGlobals != null) {
if (lastGlobals != null) {
    public void exitContext() {        context.removeThreadLocal("reval");        context.removeThreadLocal("engine");        context.exit();        thread = null;        // loop through previous globals and unset them, if necessary.        /* if (lastGlobals != null) {           for (Iterator i=lastGlobals.keySet().iterator(); i.hasNext(); ) {               String g = (String) i.next ();               try {                   global.deleteProperty (g, g.hashCode());               } catch (Exception x) {                   System.err.println ("Error resetting global property: "+g);               }           }           lastGlobals = null;           } */    }