*/
public class ThumbnailGenerator {

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

    /**
     * OpenSearch client for accessing indexed documents.
     */
    @Resource
    public SearchEngineClient searchEngineClient;

    /**
     * Default constructor for ThumbnailGenerator.
     */
    public ThumbnailGenerator() {
        // Default constructor
    }

import java.util.Map;

import org.codelibs.core.misc.Tuple3;

/**
 * Interface for thumbnail generation implementations.
 * Provides methods for creating thumbnails from various document types.
 */
public interface ThumbnailGenerator {

    /**
     * Gets the name of this thumbnail generator.
     * @return The generator name.
     */
    String getName();

    /**