}

    public SmbTreeImpl acquire() {
        return acquire(true);
    }

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

        assertEquals(tree, unwrapped);
        // Test unwrapping to a non-assignable type should fail
        assertThrows(ClassCastException.class, () -> {
            // Create a mock class that extends SmbTree but is not assignable from SmbTreeImpl
            class CustomSmbTree extends SmbTreeImpl {
                CustomSmbTree() {
                    super(session, "SHARE", "A:");
                }
            }

            result[ri] = "";
            ri++;
        }
    }

    DfsReferral getDfsReferrals(final NtlmPasswordAuthentication auth, final String path, int rn) throws SmbException {
        final SmbTree ipc = getSmbSession(auth).getSmbTree("IPC$", null);
        final Trans2GetDfsReferralResponse resp = new Trans2GetDfsReferralResponse();
        ipc.send(new Trans2GetDfsReferral(path), resp);

@Override
public void logoff() throws IOException {
    if (witnessClient != null) {
        witnessClient.close();
    }
    super.logoff();
}
```

### 5.2 Tree Connection Integration
```java
// In SmbTree.java
public void connectWithWitnessSupport() throws IOException {
    // Perform normal tree connection
    super.connect();
    
    // Register for witness notifications for this share

    /**
     * DFS resolver instance
     */
    protected static Dfs dfs;

    NtlmPasswordAuthentication auth; // Cannot be null
    SmbTree tree = null; // Initially null
    String unc; // Initially null; set by getUncPath; never ends with '/'
    int fid; // Initially 0; set by open()
    int type;
    boolean opened;
    int tree_num;

    /**