}
    }

    /**
     * Performs bulk update operations using a custom bulk request builder.
     *
     * @param consumer Consumer function to configure the bulk request builder
     * @return true if all bulk operations were successful, false otherwise
     * @throws InterruptedRuntimeException if the operation is interrupted
     * @throws SearchEngineClientException if the bulk update fails
     */

import org.codelibs.fess.util.DocList;
import org.codelibs.fess.util.MemoryUtil;
import org.opensearch.action.admin.indices.refresh.RefreshResponse;
import org.opensearch.action.bulk.BulkItemResponse;
import org.opensearch.action.bulk.BulkItemResponse.Failure;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.search.SearchResponse;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;

    }

    /**
     * Executes a bulk request asynchronously.
     *
     * @param request the bulk request
     * @return a future for the bulk response
     */
    @Override
    public ActionFuture<BulkResponse> bulk(final BulkRequest request) {
        return client.bulk(request);
    }

    /**
     * Executes a bulk request asynchronously with a callback.
     *

import org.opensearch.action.DocWriteResponse.Result;
import org.opensearch.action.admin.indices.refresh.RefreshResponse;
import org.opensearch.action.bulk.BulkItemResponse;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.delete.DeleteRequestBuilder;
import org.opensearch.action.delete.DeleteResponse;

import org.opensearch.action.DocWriteResponse.Result;
import org.opensearch.action.admin.indices.refresh.RefreshResponse;
import org.opensearch.action.bulk.BulkItemResponse;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.delete.DeleteRequestBuilder;
import org.opensearch.action.delete.DeleteResponse;

import org.opensearch.action.DocWriteResponse.Result;
import org.opensearch.action.admin.indices.refresh.RefreshResponse;
import org.opensearch.action.bulk.BulkItemResponse;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.delete.DeleteRequestBuilder;
import org.opensearch.action.delete.DeleteResponse;

            } catch (final IOException e) {
                logger.warn("Failed to access fess_config.properties.", e);
            }
        }
    }

    /**
     * Writes Fess basic configuration data in bulk format to the ZIP output stream.
     *
     * @param zos the ZIP output stream to write to
     * @param id the diagnostic ID for organizing files in the ZIP
     */

/**
 * Implementation of IndexUpdateCallback for handling document indexing operations.
 * This class manages the process of updating the search index with documents from
 * data stores, including bulk operations, document transformation, and error handling.
 */
public class IndexUpdateCallbackImpl implements IndexUpdateCallback {
    private static final Logger logger = LogManager.getLogger(IndexUpdateCallbackImpl.class);

file.role.from.file=true
# Whether to get FTP roles from a file.
ftp.role.from.file=true

# backup

# Target files for index backup.
index.backup.targets=fess_basic_config.bulk,fess_config.bulk,fess_user.bulk,system.properties,fess.json,doc.json
# Target log files for index backup.
index.backup.log.targets=click_log.ndjson,favorite_log.ndjson,search_log.ndjson,user_info.ndjson
# Timeout for loading index backup logs.

     * @param thumbnailId The thumbnail ID.
     * @param value The thumbnail value to update.
     */
    protected void updateThumbnailField(final String thumbnailId, final String value) {
        // TODO bulk
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        try {
            ComponentUtil.getIndexingHelper()