}

    /**
     * Sets the export format.
     *
     * @param format the format name (e.g. "html", "json")
     * @return this instance for method chaining
     */
    public IndexExportJob format(final String format) {
        this.formatter = createFormatter(format);
        return this;
    }

    /**
     * Creates a formatter for the given format name.
     *
     * @param format the format name

        }
    }

    // --- format() fluent API tests ---

    @Test
    public void test_format_returnsThis() {
        final IndexExportJob result = indexExportJob.format("html");
        assertSame(indexExportJob, result);
    }

    @Test
    public void test_format_unsupportedFormat() {
        try {
            indexExportJob.format("xml");

 */
public interface IndexExportFormatter {

    /**
     * Returns the file extension for this format (e.g. ".html", ".json").
     *
     * @return the file extension including the leading dot
     */
    String getFileExtension();

    /**
     * Returns the default index file name for this format (e.g. "index.html", "index.json").
     *
     * @return the index file name
     */
    String getIndexFileName();

        // Verify the string format
        assertNotNull(result);
        assertTrue(result.contains("FessUserTimeZoneProcessProvider"));
        assertTrue(result.contains("useTimeZoneHandling=false"));
        assertTrue(result.contains("acceptCookieTimeZone=false"));
        assertTrue(result.contains("@"));

        // Verify that hashCode is included in hex format

      "content_length": {
        "type": "long"
      },
      "created": {
        "type": "date",
        "format": "date_optional_time"
      },
      "timestamp": {
        "type": "date",
        "format": "date_optional_time"
      },
      "expires": {
        "type": "date",
        "format": "date_optional_time"
      },
      "digest": {
        "type": "text",
        "index": false
      },

            assertEquals("Invalid time format: 12. Expected format: HH:MM", e.getMessage());
        }

        try {
            IntervalControlHelper.parseTime("12:30:45");
            fail("Should throw FessSystemException");
        } catch (FessSystemException e) {
            assertEquals("Invalid time format: 12:30:45. Expected format: HH:MM", e.getMessage());
        }

        try {

**Key Capabilities:**
- Full-text search with OpenSearch backend
- Web, file system, and data store crawling
- Multi-format document support (Office, PDF, etc.)
- Admin GUI for configuration
- REST API for programmatic access
- SSO integration (OIDC, SAML, SPNEGO, Entra ID)
- i18n support (20+ languages)

## Tech Stack

      "content_length": {
        "type": "long"
      },
      "created": {
        "type": "date",
        "format": "date_optional_time"
      },
      "timestamp": {
        "type": "date",
        "format": "date_optional_time"
      },
      "expires": {
        "type": "date",
        "format": "date_optional_time"
      },
      "digest": {
        "type": "text",
        "index": false
      },

    public String getFileExtension() {
        return ".json";
    }

    @Override
    public String getIndexFileName() {
        return "index.json";
    }

    @Override
    public String format(final Map<String, Object> source, final Set<String> excludeFields) {
        final StringBuilder json = new StringBuilder();
        json.append("{\n");

        boolean first = true;

 * referenced in HTML documents. This generator extracts images from HTML content
 * and processes them to create thumbnail images based on configured dimensions
 * and format settings.
 *
 * <p>The generator validates image MIME types, processes image data through
 * ImageIO operations, and applies scaling and cropping to generate thumbnails
 * that meet the specified size requirements.</p>
 *