*
     * @param index
     *            the index of the parameter
     * @return the key type if the parameter type at the specified index is a parameterized {@link Map}, otherwise {@literal null}
     */
    Class<?> getKeyClassOfMap(int index);

    /**
     * Returns the value type if the method's parameter type at the specified index is a parameterized {@link Map}.
     *

    }

    /**
     * Gets the name of the data index for the crawler.
     *
     * @return the data index name
     */
    @Override
    public String getDataIndex() {
        return ComponentUtil.getFessConfig().getIndexDocumentCrawlerIndex() + ".data";
    }

    /**
     * Gets the name of the filter index for the crawler.
     *
     * @return the filter index name
     */
    @Override

    public boolean hasNext() {
        for (; index < iterators.length; ++index) {
            if (iterators[index].hasNext()) {
                return true;
            }
        }
        return false;
    }

    @Override
    public E next() {
        if (!hasNext()) {
            throw new NoSuchElementException();
        }
        return iterators[index].next();
    }

    @Override

    @Override
    public Class<?> getElementClassOfCollection(final int index) {
        assertArgumentArrayIndex("index", index, parameterTypes.length);

        if (!Collection.class.isAssignableFrom(parameterTypes[index]) || !isParameterized(index)) {
            return null;
        }
        final ParameterizedClassDesc pcd = parameterizedClassDescs[index].getArguments()[0];
        if (pcd == null) {
            return null;

    }

    /**
     * Get values from array index.
     * @param index Index
     * @param type Type
     * @param key Key
     * @return Values
     */
    @SuppressWarnings("unchecked")
    protected Map<String, Object>[] getFromArrayIndex(final String index, final String type, final String key) {
        final String actualIndex = index + "." + type.toLowerCase(Locale.ENGLISH);
        try {

            }
        }

        @Override
        public void addRule(int index, Rule rule) {
            if (rule != null) {
                if (index < 0 || index > rules.size()) {
                    throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + rules.size());
                }
                rules.add(index, rule);
            }
        }

        @Override

import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;

/**
 * Job for purging expired documents from the search index.
 * This job removes documents that have passed their expiration time based on the expires field.
 * It helps maintain the search index by cleaning up outdated content automatically.
 */
public class PurgeDocJob {

        @DisplayName("writeSetupWireFormat returns 0 for all indices")
        void writeSetupWireFormatReturnsZero(int index) {
            TransWaitNamedPipeResponse resp = new TransWaitNamedPipeResponse();
            assertEquals(0, resp.writeSetupWireFormat(new byte[10], index), "writeSetupWireFormat should always return 0");
        }

        @ParameterizedTest

import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.index.IndexAction;
import org.opensearch.action.index.IndexRequestBuilder;
import org.opensearch.index.IndexNotFoundException;
import org.opensearch.search.sort.SortBuilders;
import org.opensearch.search.sort.SortOrder;
import org.opensearch.transport.client.Client;

    }

    /**
     * Gets the OpenSearch index name.
     *
     * @return The index name.
     */
    public String getIndex() {
        return index;
    }

    /**
     * Sets the OpenSearch index name.
     *
     * @param index The index name.
     */
    public void setIndex(final String index) {
        this.index = index;
    }

    /**