if (leaseKey != null) {
        LeaseEntry entry = leaseManager.getLease(leaseKey);
        return entry != null && entry.hasHandleCache();
    }
    return false;
}
```

### 6.3 Transport Layer Integration
```java
// In SmbTransport.java
private void handleIncomingMessage(ServerMessageBlock2 msg) {
    if (msg instanceof Smb2LeaseBreakNotification) {

import org.opensearch.common.settings.Settings;
import org.opensearch.common.xcontent.XContentType;
import org.opensearch.index.query.QueryBuilders;
import org.opensearch.search.SearchHit;
import org.opensearch.transport.client.Client;

/**
 * The AnalyzerSettings class is responsible for managing and configuring analyzers for different fields and languages.

import org.opensearch.core.action.ActionListener;
import org.opensearch.index.seqno.SequenceNumbers;
import org.opensearch.search.SearchHit;
import org.opensearch.search.SearchHits;
import org.opensearch.transport.client.Client;

import jakarta.annotation.Resource;

/**
 * @param <ENTITY> The type of entity.
 * @param <CB> The type of condition-bean.
 * @author ESFlute (using FreeGen)
 */

		header.Set("X-Content-Type-Options", "nosniff")                                // Prevent mime-sniff
		header.Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains") // HSTS mitigates variants of MITM attacks

		// Previously, this value was set right before a response was sent to

import org.opensearch.index.query.Operator;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;
import org.opensearch.search.SearchHit;
import org.opensearch.transport.client.Client;

/**
 * The SuggestIndexer class is responsible for indexing and managing suggest items in an OpenSearch index.

    /**
     * Enable port 139 failover
     *
     * Property {@code jcifs.smb.client.port139.enabled} (boolean, default false)
     *
     * @return whether to failover to legacy transport on port 139
     */
    boolean isPort139FailoverEnabled();

    /**
     *
     * Property {@code jcifs.smb.client.useUnicode} (boolean, default true)
     *

import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.opensearch.index.query.QueryBuilders;
import org.opensearch.transport.client.Client;

public class SuggestUtilTest {

    private static OpenSearchRunner runner;
    private static Client client;
    private static SuggestSettings settings;

import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.smb2.Smb2Constants;
import jcifs.internal.util.SMBUtil;
import jcifs.util.transport.Response;

/**
 * Test class for Smb2NegotiateResponse functionality
 */
@DisplayName("Smb2NegotiateResponse Tests")
class Smb2NegotiateResponseTest {

    private Configuration mockConfig;

	if err != nil {
		return err
	}

	if r.NotificationCfg.Token != "" {
		req.Header.Set("Authorization", r.NotificationCfg.Token)
	}

	clnt := http.Client{Transport: getRemoteInstanceTransport()}
	resp, err := clnt.Do(req)
	if err != nil {
		return err
	}

	xhttp.DrainBody(resp.Body)
	if resp.StatusCode != http.StatusOK {
		return errors.New(resp.Status)
	}

    }
}
```

### 6.3 Session Integration
```java
// In SmbSession.java
private PersistentHandleManager handleManager;

public SmbSession(CIFSContext context, SmbTransport transport) {
    // ... existing initialization ...
    
    if (context.getConfig().isUseDurableHandles()) {
        this.handleManager = new PersistentHandleManager(context);
    }
}