search with xpath - get Total match Count -- Need Help

I am currently using xpath search for several reasons. However I didn't find TotalMatch Count on QueryResult class like SearchResult object using QueryBuilder.

            QueryManager qm=session.getWorkspace().getQueryManager();
            Query query = qm.createQuery(xpathQuery.toString(), Query.XPATH);

            query.setOffset(100);

            query.setLimit(25);
            QueryResult result = query.execute();

            NodeIterator iterator = result.getNodes();

I am searching for results on 4th page with a result limit of 25.

QueryResult class does not have any count method. I have to get NodeIterator or RowIterator to navigate to the result. These iterators will hold only number of rows set in setLimit method.

Can Someone help getting result count even after setting offset and limit on the query?

Thanks for your help!

Venkat