* <li>{@link #ANALYZER_SETTINGS_CONTENTS_READING_ANALYZER} - The contents reading analyzer settings field.</li>
 * </ul>
 *
 * This class cannot be instantiated.
 */
public final class FieldNames {
    /** The unique identifier field. */
    public static final String ID = "_id";
    /** The text content field. */
    public static final String TEXT = "text";
    /** The prefix for reading fields. */

        if (!tags.isEmpty()) {
            filterList.add(buildFilterQuery(FieldNames.TAGS, tags));
        }

        roles.add(SuggestConstants.DEFAULT_ROLE);
        if (!roles.isEmpty()) {
            filterList.add(buildFilterQuery(FieldNames.ROLES, roles));
        }

        if (!fields.isEmpty()) {
            filterList.add(buildFilterQuery(FieldNames.FIELDS, fields));
        }

        if (!kinds.isEmpty()) {

        boolQueryBuilder
                .must(QueryBuilders.rangeQuery(FieldNames.TIMESTAMP).lt(time.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli()));

        boolQueryBuilder.must(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.DOCUMENT.toString()));
        boolQueryBuilder.mustNot(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.QUERY.toString()));

        }

        final Map<String, Object> source = new HashMap<>();
        source.put(FieldNames.ARRAY_KEY, key);
        source.put(FieldNames.ARRAY_VALUE, value);
        source.put(FieldNames.TIMESTAMP, DateTimeFormatter.ISO_INSTANT.format(ZonedDateTime.now()));

        addToArrayIndex(arraySettingsIndexName, settingsId, createId(key, value), source);
    }

                .must(QueryBuilders.rangeQuery(FieldNames.DOC_FREQ).gte(1))
                .mustNot(QueryBuilders.matchPhraseQuery(FieldNames.KINDS, SuggestItem.Kind.QUERY.toString()))
                .mustNot(QueryBuilders.matchPhraseQuery(FieldNames.KINDS, SuggestItem.Kind.USER.toString())));
        if (deleteResponse.hasError()) {

        map.put(FieldNames.LANGUAGES, languages);
        map.put(FieldNames.KINDS, Stream.of(kinds).map(Kind::toString).toArray());
        map.put(FieldNames.QUERY_FREQ, queryFreq);
        map.put(FieldNames.DOC_FREQ, docFreq);
        map.put(FieldNames.USER_BOOST, userBoost);
        map.put(FieldNames.SCORE, (queryFreq + docFreq) * userBoost);
        map.put(FieldNames.TIMESTAMP, timestamp.toInstant().toEpochMilli());
        return map;

        assertNotNull(map);
        assertEquals("", map.get(FieldNames.TEXT)); // Empty string for empty map
        assertEquals(0L, map.get(FieldNames.QUERY_FREQ));
        assertEquals(0L, map.get(FieldNames.DOC_FREQ));
        assertEquals(1.0f, map.get(FieldNames.USER_BOOST));
        assertNotNull(map.get(FieldNames.READING_PREFIX + "0"));
        assertNotNull(map.get(FieldNames.FIELDS));
        assertNotNull(map.get(FieldNames.TAGS));

        queryBuilder.must(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.QUERY.toString()));
        queryBuilder.mustNot(QueryBuilders.existsQuery(FieldNames.READING_PREFIX + "1"));
        queryBuilder.must(QueryBuilders.rangeQuery(FieldNames.QUERY_FREQ).gte(queryFreqThreshold));
        if (!tags.isEmpty()) {
            queryBuilder.must(QueryBuilders.termsQuery(FieldNames.TAGS, tags));
        }
        if (!roles.isEmpty()) {

                    final String fieldReadingAnalyzer = source.get(FieldNames.ANALYZER_SETTINGS_READING_ANALYZER) == null ? null
                            : source.get(FieldNames.ANALYZER_SETTINGS_READING_ANALYZER).toString();
                    final String fieldReadingTermAnalyzer = source.get(FieldNames.ANALYZER_SETTINGS_READING_TERM_ANALYZER) == null ? null
                            : source.get(FieldNames.ANALYZER_SETTINGS_READING_TERM_ANALYZER).toString();

        }

        final Map<String, Object> source = new HashMap<>();
        source.put(FieldNames.ARRAY_KEY, ELEVATE_WORD_SETTINGD_KEY);
        source.put(FieldNames.ARRAY_VALUE, elevateWord.getElevateWord());
        source.put(ELEVATE_WORD_BOOST, elevateWord.getBoost());
        source.put(ELEVATE_WORD_READING, elevateWord.getReadings());