private SmbComBlankResponse blank_resp = null;
    private DfsReferral dfsReferral = null; // For getDfsPath() and getServerWithDfs()

    /**
     * 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 '/'

    @DisplayName("Context accessor returns constructor-provided context")
    void contextAccessor() {
        assertSame(ctx, transport.getContext());
    }

    @Test
    @DisplayName("acquire returns same instance")
    void acquireReturnsSameInstance() {
        SmbTransportImpl acquired = transport.acquire();
        assertSame(transport, acquired);
        transport.close(); // release once
    }

    @Test

 * // Process the responseData
 * ftpClient.close(); // Close and release resources
 * }
 * </pre>
 *
 * @author shinsuke
 */
public class FtpClient extends AbstractCrawlerClient {

    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(FtpClient.class);

    /** Metadata key for FTP file group */
    public static final String FTP_FILE_GROUP = "ftpFileGroup";

    return TableCollectors.toImmutableTable(
        rowFunction, columnFunction, valueFunction, mergeFunction);
  }

  /**
   * Returns an empty immutable table.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  @SuppressWarnings("unchecked")
  public static <R, C, V> ImmutableTable<R, C, V> of() {
    return (ImmutableTable<R, C, V>) SparseImmutableTable.EMPTY;
  }

    private Credentials creds;
    @Mock
    private Address address;
    @Mock
    private SmbNegotiationResponse negotiationResponse;

    @BeforeEach
    void setUp() {
        // Create a fresh pool instance for each test
        pool = new SmbTransportPoolImpl();

        // Setup default mock behaviors
        when(ctx.getConfig()).thenReturn(config);
        when(ctx.getNameServiceClient()).thenReturn(nameSvc);

	// some may be local and some remote.
	getEndpointStrings func() []string

	// Locker mutex map.
	nsMutex *nsLockMap
}

// NewNSLock - initialize a new namespace RWLocker instance.
func (er erasureObjects) NewNSLock(bucket string, objects ...string) RWLocker {
	return er.nsMutex.NewNSLock(er.getLockers, bucket, objects...)
}

// Shutdown function for object storage interface.

     */
    protected volatile SmbAuthenticationHolder smbAuthenticationHolder;

    /**
     * The CIFS context.
     */
    protected CIFSContext cifsContext;

    /**
     * Creates a new SmbClient instance.
     */
    public SmbClient() {
        super();
    }

    /**
    * Initializes the SMB client.
    * @see org.codelibs.fess.crawler.client.AbstractCrawlerClient#init()
    */
    @Override

    }

    /**
     * Get the channel manager
     *
     * @return channel manager instance
     */
    public ChannelManager getChannelManager() {
        return channelManager;
    }

    /**
     * Get the lease manager for SMB3 lease support
     *
     * @return lease manager instance
     */
    public LeaseManager getLeaseManager() {
        return leaseManager;
    }

        assertNotNull(result);
        assertTrue(result instanceof MatchAllQueryBuilder);
    }

    public void test_constructor() {
        // Test that constructor creates a valid instance
        MatchAllQueryCommand command = new MatchAllQueryCommand();
        assertNotNull(command);
    }

    public void test_execute_logOutput() {

        facetQueryView.init();

        // Size should remain the same
        assertEquals(firstSize, facetQueryView.getQueryMap().size());
        // But queries would be added again to FacetInfo (distinct handles duplicates)
        assertTrue(testFacetInfo.getAddedQueries().size() >= firstQueriesCount);
    }

    // Test complex scenarios
    public void test_init_withMixedQueries() {