private static final Logger logger = LogManager.getLogger(OsddHelper.class);

    /** The OSDD file path. */
    protected String osddPath;

    /** The encoding for OSDD file. */
    protected String encoding = Constants.UTF_8;

    /** The content type for OSDD response. */
    protected String contentType = "text/xml"; // "application/opensearchdescription+xml"

    /** The OSDD file. */
    protected File osddFile;

    protected Float boost;

    /** createdBy */
    protected String createdBy;

    /** createdTime */
    protected Long createdTime;

    /** permissions */
    protected String[] permissions;

    /** reading */
    protected String reading;

    /** suggestWord */
    protected String suggestWord;

    /** updatedBy */
    protected String updatedBy;

    /** updatedTime */

        docMap.put("lang", "fr");

        Set<Map.Entry<String, Object>> entrySet = docMap.entrySet();
        assertEquals(1, entrySet.size());

        String[] keys = entrySet.stream().map(Map.Entry::getKey).toArray(String[]::new);
        assertEquals("lang", keys[0]);
    }

    @Test
    public void test_entrySet_multiple_lang_keys() {
        Map<String, Object> parentMap = new LinkedHashMap<>();

        return super.hashCode();
    }

    @Override
    public String toString() {
        return getClass().getSimpleName() + ":" + doBuildColumnString(", ") + "@" + Integer.toHexString(hashCode());
    }

    protected abstract String doBuildColumnString(String dm);

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override

        return super.hashCode();
    }

    @Override
    public String toString() {
        return getClass().getSimpleName() + ":" + doBuildColumnString(", ") + "@" + Integer.toHexString(hashCode());
    }

    protected abstract String doBuildColumnString(String dm);

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override

    /** createdAt */
    protected LocalDateTime createdAt;

    /** docId */
    protected String docId;

    /** queryId */
    protected String queryId;

    /** url */
    protected String url;

    /** userInfoId */
    protected String userInfoId;

    // [Referrers] *comment only

    // ===================================================================================

     */
    protected static final String USER_ROLES = "userRoles";

    /**
     * The cached cipher for encryption and decryption.
     */
    protected CachedCipher cipher;

    /**
     * The separator for values in the role string.
     */
    protected String valueSeparator = "\n";

    /**
     * The separator for roles in the role string.
     */
    protected String roleSeparator = ",";

        if (getCurrent() == null) {
            elements << element
            parent?.appendChild(element)
        }
        return element
    }

    protected Element createNode(Object name, Map attributes) {
        Element element = createNode(name)
        attributes.each {key, value ->
            element.setAttribute(key as String, value as String)
        }

    private static final String NAME_PREFIX = "dataConfigTest_";
    private static final String API_PATH = "/api/admin/dataconfig";
    private static final String LIST_ENDPOINT_SUFFIX = "settings";
    private static final String ITEM_ENDPOINT_SUFFIX = "setting";

    private static final String KEY_PROPERTY = "name";

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    }

    /** Case 1: Normal merge (no duplicates) */
    @Test
    public void test_mergeResponseData_noOverwrite() {
        Map<String, Object> dataMap = new HashMap<>();
        dataMap.put("a", "A0");
        Map<String, Object> responseDataMap = new HashMap<>();
        responseDataMap.put("b", "B1");

        indexUpdateCallback.mergeResponseData(dataMap, responseDataMap);