### Basic Usage

#### 1. Create Suggester Instance

```java
import org.codelibs.fess.suggest.Suggester;
import org.opensearch.client.Client;

// Initialize with your OpenSearch client
String suggestId = "my-suggest-index";
Suggester suggester = Suggester.builder().build(client, suggestId);
```

#### 2. Add Suggestion Documents

```java
import org.codelibs.fess.suggest.entity.SuggestItem;

package org.codelibs.opensearch.extension;

import java.util.HashMap;
import java.util.Map;

import org.codelibs.opensearch.extension.analysis.AlphaNumWordFilterFactory;
import org.codelibs.opensearch.extension.analysis.CharTypeFilterFactory;
import org.codelibs.opensearch.extension.analysis.DisableGraphFilterFactory;
import org.codelibs.opensearch.extension.analysis.FlexiblePorterStemFilterFactory;

import java.io.ByteArrayInputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;

package org.codelibs.fess.crawler.processor.impl;

import java.io.IOException;
import java.io.InputStream;
import java.util.LinkedHashSet;
import java.util.Set;

import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.fess.crawler.builder.RequestDataBuilder;
import org.codelibs.fess.crawler.container.CrawlerContainer;
import org.codelibs.fess.crawler.entity.RequestData;
import org.codelibs.fess.crawler.entity.ResponseData;

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.regex.Pattern;

import javax.net.ssl.SSLContext;

import org.apache.commons.io.output.DeferredFileOutputStream;
import org.apache.commons.lang3.SystemUtils;
import org.apache.http.Header;
import org.apache.http.HttpEntity;

 */
package org.codelibs.fess.crawler.client;

import static org.codelibs.core.stream.StreamUtil.split;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;

import org.apache.commons.lang3.RandomUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

package org.codelibs.opensearch.extension.analysis;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.Reader;
import java.nio.charset.StandardCharsets;

import org.apache.lucene.analysis.CharArraySet;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.WordlistLoader;
import org.apache.lucene.util.IOUtils;
import org.codelibs.analysis.ja.NumberConcatenationFilter;

 */
package org.codelibs.fess.crawler.client.http.ntlm;

import java.io.IOException;
import java.util.Base64;
import java.util.Properties;

import org.apache.http.impl.auth.NTLMEngine;
import org.apache.http.impl.auth.NTLMEngineException;
import org.codelibs.fess.crawler.exception.CrawlingAccessException;

import org.codelibs.jcifs.smb.CIFSException;
import org.codelibs.jcifs.smb.config.PropertyConfiguration;

 */
package org.codelibs.fess.crawler.extractor.impl;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.io.ByteOrderMark;
import org.apache.commons.io.input.BOMInputStream;
import org.apache.commons.text.translate.AggregateTranslator;

package org.codelibs.fess.crawler.client.storage;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.InputStream;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.io.CloseableUtil;
import org.codelibs.core.io.CopyUtil;
import org.codelibs.core.io.FileUtil;