}

    /**
     * Test isSearchField() with Set-based lookup.
     */
    @Test
    public void test_isSearchField_withSetBasedLookup() {
        // Test valid search fields
        assertTrue(queryCommand.isSearchField("title"));
        assertTrue(queryCommand.isSearchField("content"));
        assertTrue(queryCommand.isSearchField("url"));
        assertTrue(queryCommand.isSearchField("host"));

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String field = getSearchField(context.getDefaultField(), termRangeQuery.getField());

        if (!isSearchField(field)) {
            final StringBuilder queryBuf = new StringBuilder();
            queryBuf.append(termRangeQuery.includesLower() ? '[' : '{');
            final BytesRef lowerTerm = termRangeQuery.getLowerTerm();

                            .maxExpansions(fessConfig.getQueryPrefixExpansionsAsInteger())
                            .slop(fessConfig.getQueryPrefixSlopAsInteger()));
        }

        if (!isSearchField(field)) {
            final String query = prefixQuery.getPrefix().toString();
            final String origQuery = toLowercaseWildcard(query);
            context.addFieldLog(Constants.DEFAULT_FIELD, query + "*");

            }
            return buildDefaultQueryBuilder(fessConfig, context,
                    (f, b) -> QueryBuilders.wildcardQuery(f, toLowercaseWildcard(text)).boost(b * boost));
        }

        if (isSearchField(field)) {
            final String text = wildcardQuery.getTerm().text();
            context.addFieldLog(field, text);
            final String highlightText = StringUtils.strip(text, "*");

            return convertWildcardQuery(fessConfig, context, termQuery, boost, field, text);
        }
        if (!isSearchField(field)) {
            final String origQuery = termQuery.toString();
            return convertDefaultTermQuery(fessConfig, context, termQuery, boost, DEFAULT_FIELD, origQuery);
        }