public String getIndexFieldDigest() {
                return "digest";
            }

            @Override
            public String getIndexFieldThumbnail() {
                return "thumbnail";
            }

            @Override
            public String getIndexFieldClickCount() {
                return "click_count";
            }

            @Override

			<fileMode>0755</fileMode>
			<directoryMode>0755</directoryMode>
			<lineEnding>unix</lineEnding>
			<includes>
				<include>fess.in.sh</include>
				<include>fess</include>
				<include>generate-thumbnail</include>
			</includes>
		</fileSet>
		<fileSet>
			<filtered>false</filtered>
			<outputDirectory>fess-${project.version}/bin</outputDirectory>
			<includes>
				<include>module.xml</include>

    /** Property key for login link enabled configuration. */
    public static final String LOGIN_LINK_ENALBED_PROPERTY = "login.link.enabled";

    /** Property key for thumbnail enabled configuration. */
    public static final String THUMBNAIL_ENALBED_PROPERTY = "thumbnail.enabled";

    /** Property key for failure type ignore configuration. */
    public static final String IGNORE_FAILURE_TYPE_PROPERTY = "failure.ignoretype";

    String THUMBNAIL_HTML_IMAGE_THUMBNAIL_WIDTH = "thumbnail.html.image.thumbnail.width";

    /** The key of the configuration. e.g. 100 */
    String THUMBNAIL_HTML_IMAGE_THUMBNAIL_HEIGHT = "thumbnail.html.image.thumbnail.height";

    /** The key of the configuration. e.g. png */
    String THUMBNAIL_HTML_IMAGE_FORMAT = "thumbnail.html.image.format";

    /** The key of the configuration. e.g. //IMG */

    }

    /**
     * Gets the path to thumbnail files directory.
     *
     * @param names the path components to append to the thumbnails directory
     * @return the Path object pointing to the thumbnails directory
     */
    public static Path getThumbnailPath(final String... names) {
        return getPath("WEB-INF/", "thumbnails", names);
    }

    /**

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.opensearch.config.exentity.WebConfig;
import org.codelibs.fess.thumbnail.ThumbnailManager;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.DocList;
import org.dbflute.optional.OptionalEntity;

                    return "filetype";
                case FessConfig.INDEX_FIELD_FILENAME:
                    return "filename";
                case FessConfig.INDEX_FIELD_THUMBNAIL:
                    return "thumbnail";
                case FessConfig.INDEX_FIELD_MIMETYPE:
                    return "mimetype";

                // Crawler settings
                case FessConfig.CRAWLER_DATA_SERIALIZER:

            public String getIndexFieldUrl() {
                return "url";
            }

            @Override
            public String getIndexFieldThumbnail() {
                return "thumbnail";
            }

            @Override
            public String getIndexFieldClickCount() {
                return "click_count";
            }

            @Override

### Log Files

Check these logs for troubleshooting:

- **Main Application**: `logs/fess.log`
- **Crawler**: `logs/fess-crawler.log`
- **Search**: `logs/fess-search.log`
- **Thumbnail**: `logs/fess-thumbnail.log`

### Getting Help

- **Documentation**: https://fess.codelibs.org/
- **GitHub Issues**: https://github.com/codelibs/fess/issues
- **Discussions**: https://github.com/codelibs/fess/discussions

                                            key="labels.thumbnail"/></span>
                                    <div class="form-inline col-sm-9">
                                        <la:errors property="thumbnail"/>
                                        <div class="form-check">
                                            <la:checkbox styleId="thumbnail" styleClass="form-check-input" property="thumbnail"/>