logger.debug("The number of an added document is {}.", documentSize.get());
        }

    }

    /**
     * Processes a document through the ingest pipeline.
     * Applies all available ingesters to transform the document data.
     *
     * @param paramMap the data store parameters
     * @param dataMap the document data to process
     * @return the processed document data
     */

        return null;
    }

    /**
     * Processes a document through the ingest pipeline if an ingest factory is available.
     * Applies all configured ingesters to transform and enrich the document data.
     *
     * @param accessResult the access result containing document metadata
     * @param map the document data map to process
     * @return the processed document map after applying all ingesters
     */

    }

    /**
     * Extracts metadata from the PDF document and adds it to the extraction result.
     * @param document the PDF document
     * @param extractData the extraction data to add metadata to
     */
    protected void extractMetadata(final PDDocument document, final ExtractData extractData) {
        final PDDocumentInformation info = document.getDocumentInformation();
        if (info == null) {
            return;

 * reader.setScrollSize(1000); // Set the scroll size
 * reader.setLimitOfDocumentSize(1024 * 1024); // Limit document size to 1MB
 * reader.setQuery(QueryBuilders.termQuery("field", "value")); // Set a query
 *
 * Map<String, Object> document;
 * while ((document = reader.read()) != null) {
 *     // Process the document
 *     System.out.println(document);
 * }
 *
 * reader.close(); // Close the reader to release resources
 * }
 * </pre>
 */

        });
        return asEditHtml();
    }

    /**
     * Displays the form for editing an existing document.
     *
     * @param form the edit form containing document ID
     * @return HTML response for the document edit form
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse edit(final EditForm form) {

    }

    /**
     * The search query used to find the document.
     * Optional field with maximum length of 1000 characters.
     */
    @Size(max = 1000)
    public String q;

    /**
     * The document ID of the document to delete.
     * Required field for identifying the specific document.
     */
    @Required
    public String docId;

import java.util.Arrays;
import java.util.Map;

/**
 * A specialized ArrayList for storing document data with additional metadata.
 * This class extends ArrayList to hold document maps while tracking content size
 * and processing time metrics. It's used throughout the Fess search system to
 * manage collections of search results and crawled documents.
 *
 */
public class DocList extends ArrayList<Map<String, Object>> {

        }
    }

    /**
     * Deletes old documents that have the same URL but different document IDs
     * as the documents in the provided list. This prevents duplicate documents
     * from accumulating in the index.
     *
     * @param searchEngineClient the search engine client to use for deletion
     * @param docList the list of new documents to check against

    // =========
    /** Search engine client for document operations */
    @Resource
    protected SearchEngineClient searchEngineClient;

    // ===================================================================================
    // Search Execute
    //

    /**
     * Performs bulk document operations (index multiple documents).
     * Validates document fields and adds default values where necessary.
     *

        return null; // ignore
    }

    /**
     * Retrieves a specific document by ID.
     *
     * @param id the document ID to retrieve
     * @return JSON response containing the document
     */
    // GET /api/admin/searchlist/doc/{doc_id}
    @Execute
    public JsonResponse<ApiResult> get$doc(final String id) {