void testUnwrap() {
        SmbSessionImpl session = newSession();

        // Happy path: ask for SmbSession and SmbSessionInternal
        assertSame(session, session.unwrap(SmbSessionInternal.class));
        assertSame(session, session.unwrap(jcifs.SmbSession.class));

        // Edge: force incompatible class via raw type to trigger ClassCastException

    context.getConfig().setProperty("jcifs.smb.client.useWitness", "true");
    context.getConfig().setProperty("jcifs.smb.client.witnessServiceDiscovery", "true");
    
    SmbSession session = new SmbSession(context, transport);
    session.initializeWitnessSupport();
    
    // Should either find witness service or gracefully handle absence
    // No exception should be thrown
}

- [ ] Add persistent handle capability negotiation
- [ ] Create handle cache for reconnection

#### 2.3 Integration Points
- Extend `SmbFile` with persistent handle support
- Modify `SmbSession` for handle replay during reconnection
- Update `Smb2CreateRequest/Response` for durable contexts

---

### Phase 3: Multi-Channel Support
**Priority: MEDIUM** | **Estimated Effort: 5-6 weeks**

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

class SmbComSessionSetupAndXTest {

    @Mock
    private SmbSession mockSession;
    @Mock
    private SmbTransport mockTransport;
    @Mock
    private ServerMessageBlock mockAndx;
    @Mock
    private NtlmPasswordAuthentication mockAuth;

import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicInteger;

public class ChannelManager {
    private final CIFSContext context;
    private final SmbSession session;
    private final Map<String, ChannelInfo> channels;
    private final List<NetworkInterfaceInfo> localInterfaces;
    private final List<NetworkInterfaceInfo> remoteInterfaces;

                .unwrap(SmbTransportInternal.class);
                SmbSessionInternal smbSession = smbTransport.getSmbSession(tf, dc.getHostName(), null).unwrap(SmbSessionInternal.class);
                SmbTreeInternal tree = smbSession.getSmbTree(tf.getConfig().getLogonShare(), null).unwrap(SmbTreeInternal.class)) {
            tree.connectLogon(tf);
        }
    }

    /**

    public boolean isInUse() {
        return this.usageCount.get() > 0;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbSession#unwrap(java.lang.Class)
     */
    @SuppressWarnings("unchecked")
    @Override
    public <T extends SmbSession> T unwrap(Class<T> type) {
        if (type.isAssignableFrom(this.getClass())) {
            return (T) this;
        }

     *
     * {@inheritDoc}
     *
     * @see jcifs.smb.NtlmPasswordAuthenticator#equals(java.lang.Object)
     */
    @Override
    public boolean equals(Object other) {
        // this method is called from SmbSession
        if (other instanceof Kerb5Authenticator) {
            return Objects.equals(this.getSubject(), ((Kerb5Authenticator) other).getSubject());
        }

        return false;
    }

    /**

import jcifs.smb1.smb1.NtlmPasswordAuthentication;
import jcifs.smb1.smb1.SmbAuthException;
import jcifs.smb1.smb1.SmbException;
import jcifs.smb1.smb1.SmbFile;
import jcifs.smb1.smb1.SmbFileInputStream;
import jcifs.smb1.smb1.SmbSession;
import jcifs.smb1.util.Base64;
import jcifs.smb1.util.LogStream;
import jcifs.smb1.util.MimeMap;

/**
 * This servlet may be used to "browse" the entire hierarchy of resources

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

class SmbTreeTest {

    @Mock
    private SmbSession session;

    @Mock
    private SmbTransport transport;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        // Setup transport fields that are accessed directly