protected void prepare(Mailbox mbx, ZimbraQueryResultsImpl res, MailboxIndex mbidx, int chunkSize)
protected void prepare(Mailbox mbx, ZimbraQueryResultsImpl res, MailboxIndex mbidx, SearchParams params, int chunkSize)
    protected void prepare(Mailbox mbx, ZimbraQueryResultsImpl res, MailboxIndex mbidx, int chunkSize)            throws IOException, ServiceException {        // empty    }