Map<String, String> dataMap = new HashMap<>();
        dataMap.put("key1", "value1");
        dataMap.put("key2", "");
        dataMap.put("key3", null);

        // Test with existing value
        String result1 = (String) method.invoke(crawler, dataMap, "key1", "default");
        assertEquals("value1", result1);

        // Test with empty value
        String result2 = (String) method.invoke(crawler, dataMap, "key2", "default");

                    .get(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).anyMatch(name -> {
                        final String[] values = req.getParameterValues(name);
                        if (values == null || values.length == 0 || StringUtil.isEmpty(values[0])) {
                            if (logger.isDebugEnabled()) {

        final String field = "content";
        final String value = "test";

        assertTrue(indexingHelper.updateDocument(client, id, field, value));
        assertEquals("fess.update", resultMap.get("index"));
        assertEquals(id, resultMap.get("id"));
        assertEquals(field, resultMap.get("field"));
        assertEquals(value, resultMap.get("value"));
    }

    @Test
    public void test_deleteDocument() {

     */
    @Required
    @Min(value = 1)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer numOfThread;

    /**
     * The interval time between requests in milliseconds.
     */
    @Required
    @Min(value = 0)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer intervalTime;

    /**
     * The boost value for documents from this web configuration.

    public String createdBy;

    /**
     * The timestamp when this access token was created.
     * Stored as a long value representing milliseconds since epoch.
     */
    @ValidateTypeFailure
    public Long createdTime;

    /**
     * Initializes the form with default values for creation.
     * Sets the CRUD mode to CREATE and populates created by and created time fields

        /**
         * Returns the value.
         *
         * @return The value.
         */
        public String getValue() {
            return value;
        }

        /**
         * Sets the value.
         *
         * @param value The value.
         */
        public void setValue(final String value) {
            this.value = value;
        }

        /**

        long readInterval = 0;
        final String value = paramMap.getAsString("readInterval");
        if (StringUtil.isNotBlank(value)) {
            try {
                readInterval = Long.parseLong(value);
            } catch (final NumberFormatException e) {
                logger.warn("Invalid readInterval value: '{}'. Expected: numeric value in milliseconds.", value);
            }
        }
        return readInterval;

            }
        }
    }

    private static String[] splitLine(final String value) {
        if (StringUtil.isBlank(value)) {
            return StringUtil.EMPTY_STRINGS;
        }
        final String[] values = value.split("[\r\n]");
        final List<String> list = new ArrayList<>(values.length);
        for (final String line : values) {
            if (StringUtil.isNotBlank(line)) {
                list.add(line.trim());

            if (key.isEmpty()) continue;
            if (!props.containsKey(key)) {
                missing.add(key);
                continue;
            }
            String value = props.get(key);
            if (value == null || value.trim().isEmpty()) {
                empty.add(key);
            }
        }

        if (!missing.isEmpty() || !empty.isEmpty()) {
            if (!missing.isEmpty()) {

    /** Boost expression to apply to matching documents */
    @Required
    @Size(max = 10000)
    public String boostExpr;

    /** Sort order for displaying boost configurations */
    @Required
    @Min(value = 0)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer sortOrder;

    /** User who created this configuration */
    @Size(max = 1000)
    public String createdBy;