* and default operator.
     *
     * @return a configured Lucene query parser
     */
    protected org.apache.lucene.queryparser.classic.QueryParser createQueryParser() {
        final LuceneQueryParser parser = new LuceneQueryParser(defaultField, analyzer);
        parser.setAllowLeadingWildcard(allowLeadingWildcard);
        LaRequestUtil.getOptionalRequest().ifPresent(req -> {