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

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

    /**
     * Performs bulk document operations (index multiple documents).

     *
     * @param searchEngineClient the search engine client to query
     * @param id the parent document ID to find children for
     * @return a set of RequestData objects for the child URLs, or null if no children found
     */
    protected Set<RequestData> getChildUrlSet(final SearchEngineClient searchEngineClient, final String id) {

         */
        protected final String imageExtention;

        /**
         * OpenSearch client for document validation.
         */
        protected final SearchEngineClient searchEngineClient;

        /**
         * Fess configuration for settings.
         */
        protected final FessConfig fessConfig;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.search.SearchResponse;

            if (!docList.isEmpty()) {
                final IndexingHelper indexingHelper = ComponentUtil.getIndexingHelper();
                final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
                indexingHelper.sendDocuments(searchEngineClient, docList);
            }
        }
    }

    /**
     * Adds click count information to the document.
     *

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.Constants;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.action.admin.cluster.node.hotthreads.NodesHotThreadsResponse;
import org.opensearch.common.unit.TimeValue;

/**

    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
    }

    /**

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
        final IndexingHelper indexingHelper = ComponentUtil.getIndexingHelper();
        try {
            final Map<String, Object> doc = indexingHelper.getDocument(searchEngineClient, id,

     *
     * @param searchEngineClient the search engine client to perform the query
     * @return a list of maps containing session IDs and their document counts
     */
    public List<Map<String, String>> getSessionIdList(final SearchEngineClient searchEngineClient) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

import java.io.IOException;
import java.io.OutputStream;
import java.util.function.Function;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.lastaflute.di.exception.IORuntimeException;
import org.opensearch.core.xcontent.MediaType;
import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;