* <p>
     * This method registers only the classes that are needed by the crawler data serialization.
     * By explicitly registering classes, we prevent deserialization of arbitrary classes
     * which could lead to remote code execution vulnerabilities through gadget chains.
     * </p>
     *
     * @param kryo the Kryo instance to register classes with
     */
    protected void registerClasses(final Kryo kryo) {

/**
 * Suggestor - jQuery plugin for search autocomplete functionality
 * Provides real-time search suggestions with keyboard and mouse navigation
 */
(function ($) {
  "use strict";

  // Key code constants for better readability
  var KEY_CODES = {
    BACKSPACE: 8,
    ENTER: 13,
    SPACE: 32,
    UP: 38,
    DOWN: 40,
    DELETE: 46,
    NUM_0: 48,
    NUM_9: 57,
    A: 65,
    Z: 90,
    NUMPAD_0: 96,

/*!
 * Font Awesome Free 5.12.0 by @fontawesome - https://fontawesome.com
 * License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
 */

        QueryBuilder result = builder.apply("title", 3.0f);
        assertNotNull(result);
    }

    /**
     * Test that convertWithFieldCheck() pattern reduces code duplication.
     * This test demonstrates how the template method can be used to replace
     * repetitive field checking logic.
     */
    @Test
    public void test_convertWithFieldCheck_reducesCodeDuplication() {

## GitHub docs: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
##
## CODEOWNERS style rules:
## 1. Prefer team ownership over individual user ownership.
## 2. GBT-related team should be listed first.
## 3. Try to keep paths alphabetically sorted within visual groups.
## 4. List individual owners last.
##

# Build infrastructure

/*!
 * Font Awesome Free 5.12.0 by @fontawesome - https://fontawesome.com
 * License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
 */

     * 2. Check if field is a search field and apply field-specific query
     * 3. Fall back to default query builder for unsupported fields
     *
     * This reduces code duplication across query command implementations.
     *
     * @param fessConfig the Fess configuration
     * @param context the query context
     * @param field the field name
     * @param text the query text

        tag2.setId("test");
        tag2.setCss("highlight");

        // Equal objects must have equal hash codes
        assertEquals(tag1.hashCode(), tag2.hashCode());

        // Hash code should be consistent
        int hash1 = tag1.hashCode();
        int hash2 = tag1.hashCode();
        assertEquals(hash1, hash2);
    }

    @Test
    public void test_setters() {

        ComponentUtil.getFessConfig().getApiJsonResponseHeaderList().forEach(e -> response.setHeader(e.getFirst(), e.getSecond()));
    }

    /**
     * Writes a JSON response.
     * @param status The status code.
     * @param t The throwable.
     */
    protected void writeJsonResponse(final int status, final Throwable t) {
        final Supplier<String> stacktraceString = () -> {

     * @param commands The command array to execute.
     * @param username The username parameter for the command.
     * @param password The password parameter for the command.
     * @return The exit code of the executed command.
     */
    protected int executeCommand(final String[] commands, final String username, final String password) {
        if (commands == null || commands.length == 0) {