import org.opensearch.transport.client.Client;

/**
 * Builder class for constructing {@link SuggestRequest} instances.
 * This builder provides methods to set various parameters for the suggest request.
 */
public class SuggestRequestBuilder extends RequestBuilder<SuggestRequest, SuggestResponse> {
    /**
     * Constructor for SuggestRequestBuilder.
     * @param client The OpenSearch client.

import static org.junit.Assert.assertTrue;

import org.junit.Test;

public class SuggestRequestTest {
    @Test
    public void test_isHiraganaQuery() throws Exception {
        SuggestRequest request = new SuggestRequest();
        assertTrue(request.isHiraganaQuery("あ"));
        assertTrue(request.isHiraganaQuery("あおぞら"));
        assertTrue(request.isHiraganaQuery("けんさく"));

---

## Quick Reference

### Essential Files

| File | Purpose |
|------|---------|
| `Suggester.java` | Main entry point, index management |
| `SuggestIndexer.java` | Indexing operations |
| `SuggestRequest.java` | Query building, scoring |
| `SuggestSettings.java` | Configuration |
| `SuggestItem.java` | Domain model |
| `DefaultContentsParser.java` | Text processing pipeline |

### Key Constants

```java