*/
    public OpenSearchUrlFilter() {
        // NOP
    }

    /**
     * Field name for session ID.
     */
    public static final String SESSION_ID = "sessionId";

    /**
     * Field name for filter type.
     */
    public static final String FILTER_TYPE = "filterType";

    /**
     * Field name for URL.
     */
    public static final String URL = "url";

    /**

        String text = "";
        String field = "content";
        String lang = "en";

        List<AnalyzeToken> tokens = analyzer.analyze(text, field, lang);

        assertNotNull(tokens);
        assertTrue(tokens.isEmpty());
    }

    @Test
    public void testAnalyzeWithNullText() {
        // Test analyze with null text
        String text = null;
        String field = "content";
        String lang = "en";

 * a given text based on the specified field and optional language parameters.
 */
public interface Normalizer {
    /**
     * Normalizes the given text.
     * @param text The text to normalize
     * @param field The field name
     * @param langs The language
     * @return The normalized text
     */
    String normalize(String text, String field, String... langs);

        String text = "test";
        String field = "content";

        List<String> readings = converter.convert(text, field);

        assertNotNull(readings);
        assertEquals(1, readings.size());
        assertEquals("TEST", readings.get(0));
    }

    @Test
    public void testConvertWithNullField() throws IOException {
        // Test convert with null field
        converter.init();

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String field = getSearchField(context.getDefaultField(), wildcardQuery.getField());
        if (Constants.DEFAULT_FIELD.equals(field)) {
            final String text = wildcardQuery.getTerm().text();
            context.addFieldLog(field, text);
            final String highlightText = StringUtils.strip(text, "*");

    /** Sort parameter for error page. */
    public String sort;

    /** Language parameter for error page. */
    public String lang;

    /** Additional fields map for cache operations. */
    public Map<String, String[]> fields = new HashMap<>();

    /**
     * Default constructor for CacheForm.
     */
    public CacheForm() {
        super();
    }

         * Normalizes the given text based on the specified field.
         *
         * @param text  the text to normalize
         * @param field the field to use for normalization
         * @param dummy additional parameters (not used)
         * @return the normalized text
         */
        @Override
        public String normalize(final String text, final String field, final String... dummy) {
            if (text == null) {

            builder.field(SESSION_ID, sessionId);
        }
        if (method != null) {
            builder.field(METHOD, method);
        }
        if (url != null) {
            builder.field(URL, url);
        }
        if (parentUrl != null) {
            builder.field(PARENT_URL, parentUrl);
        }
        if (depth != null) {
            builder.field(DEPTH, depth);
        }

                this.tid = -1;

                // Clear any cached resources
                // Note: Most fields in SmbTreeImpl are final or managed differently

                // Clear session reference if mutable
                // Note: session field may be final, cannot be nulled
            }
        } catch (Exception e) {
            log.error("Failed to perform emergency tree cleanup", e);

        /**
         * Splits a field name into its components.
         *
         * @param defaultField the default field name
         * @param field the field name to split
         * @return a Pair containing the field name and extension key
         */
        protected Pair<String, String> splitField(final String defaultField, final String field) {
            final int indexOf = field.indexOf(':');
            if (indexOf < 0) {