subs[i].generateKey(subs, "");
subs[i].generateKey(subs);
    private NLSRefactoring prepareRefac(ICompilationUnit cu) {        NLSRefactoring refac = NLSRefactoring.create(cu, fHelper.fCodeGenerationSettings);        NLSSubstitution[] subs = refac.getSubstitutions();        for (int i = 0; i < subs.length; i++) {            subs[i].setState(NLSSubstitution.EXTERNALIZED);            subs[i].generateKey(subs, "");        }          fillInValues(refac);        return refac;    }