*/
public abstract class Request<T extends Response> {
    /**
     * Constructs a new request.
     */
    public Request() {
        // nothing
    }

    /**
     * Executes the request.
     * @param client The OpenSearch client.
     * @return A Promise that will be resolved with the response or rejected with an error.
     */
    public Deferred<T>.Promise execute(final Client client) {

        /** HTTP POST method. */
        POST,
        /** HTTP HEAD method. */
        HEAD;
    }

    /** The HTTP method for this request. */
    private Method method;

    /** The URL for this request. */
    private String url;

    /** The weight/priority of this request (default: 1.0). */
    private float weight = 1.0f;

    /**
     * Creates a new RequestData instance.
     */
    public RequestData() {

    /**
     * Executes an index request.
     *
     * @param request The index request.
     * @return Future for the index response.
     */
    @Override
    public ActionFuture<IndexResponse> index(final IndexRequest request) {
        return client.index(request);
    }

    /**
     * Executes an index request asynchronously.
     *
     * @param request The index request.

    /** The request being built. */
    protected Req request;

    /**
     * Constructor for RequestBuilder.
     * @param client The OpenSearch client.
     * @param request The request instance.
     */
    public RequestBuilder(final Client client, final Req request) {
        this.client = client;
        this.request = request;
    }

    /**
     * Executes the request.

            scheme.authenticate(credentials, (request, consumer) -> {

                // request header
                for (final Header header : requestHeaderList) {
                    request.addHeader(header);
                }

                HttpEntity httpEntity = null;
                try {
                    final HttpResponse response = closeableHttpClient.execute(request, new BasicHttpContext(httpClientContext));

 *   <li>Creating a {@link PopularWordsResponse} from the OpenSearch search response.</li>
 * </ul>
 *
 * @see Request
 * @see PopularWordsResponse
 */
public class PopularWordsRequest extends Request<PopularWordsResponse> {
    /**
     * Constructs a new popular words request.
     */
    public PopularWordsRequest() {
        // nothing
    }

    private String index = null;

        this.data = data;
    }

    /**
     * Add a child URL.
     * @param url the request data to add to the child URL set
     */
    public void addUrl(final RequestData url) {
        childUrlSet.add(url);
    }

    /**
     * Add child URLs.
     * @param c the collection of request data to add to the child URL set
     */
    public void addAllUrl(final Collection<RequestData> c) {

);

suggester.indexer().index(item);
```

#### 3. Get Suggestions

```java
import org.codelibs.fess.suggest.request.suggest.SuggestResponse;

// Synchronous suggestion request
SuggestResponse response = suggester.suggest()
    .setQuery("sea")                    // user input
    .setSize(10)                        // max suggestions
    .execute()

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.suggest.request.suggest;

import java.util.List;

import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.fess.suggest.request.Response;

/**
 * Represents a response for a suggest request.
 * This class holds the details of the response including the index, time taken, words, total count, and suggested items.
 */

         * @param request the request data
         * @param count the current retry count
         */
        void onRequest(FaultTolerantClient client, RequestData request, int count);

        /**
         * Called when a request ends.
         *
         * @param client the fault-tolerant client
         * @param request the request data