when(smbTree.unwrap(CustomSmbTree.class)).thenReturn(null);

        CustomSmbTree result = smbTree.unwrap(CustomSmbTree.class);

        assertEquals(null, result, "Should return null when type cannot be unwrapped");
        verify(smbTree).unwrap(CustomSmbTree.class);
    }

    /**
     * Test for unwrap() method throwing exception.
     * Verifies that unwrap can throw exceptions when appropriate.
     */
    @Test

    public Set<R> rowKeySet() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.rowKeySet();
    }

    @Override
    public Map<R, Map<C, V>> rowMap() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.rowMap();
    }

    private static final long serialVersionUID = 0;
  }

  @Override
  protected Table<String, Integer, Character> create(@Nullable Object... data) {

    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;
        }
        throw new ClassCastException();

        jcifs.SID mockSid2 = mock(jcifs.SID.class);
        jcifs.SID mockSid3 = mock(jcifs.SID.class);
        when(mockSid1.unwrap(sid_t.class)).thenReturn(mockSidT);
        when(mockSid2.unwrap(sid_t.class)).thenReturn(mockSidT);
        when(mockSid3.unwrap(sid_t.class)).thenReturn(mockSidT);
        testSids = new jcifs.SID[] { mockSid1, mockSid2, mockSid3 };

        // Act

  }

  @LazyInit private transient @Nullable Map<R, Map<C, V>> rowMap;

  @Override
  public Map<R, Map<C, V>> rowMap() {
    Map<R, Map<C, V>> result = rowMap;
    return (result == null) ? rowMap = createRowMap() : result;
  }

  Map<R, Map<C, V>> createRowMap() {
    return new RowMap();
  }

  @WeakOuter
  class RowMap extends ViewCachingAbstractMap<R, Map<C, V>> {
    @Override

 *
 * @author mbechler
 *
 */
public interface Address {

    /**
     * Unwrap the address to a specific type
     *
     * @param <T> the type to unwrap to
     * @param type the target type to unwrap to
     * @return instance for type, null if the type cannot be unwrapped
     */
    <T extends Address> T unwrap(Class<T> type);

    /**
     * Gets the host name of this address.
     *

        }

        @Test
        @DisplayName("unwrap returns this for assignable type; otherwise throws ClassCastException")
        void testUnwrap() throws Exception {
            SID sid = new SID("S-1-5-21-1");
            // Happy path
            assertSame(sid, sid.unwrap(SID.class));
            assertSame(sid, sid.unwrap(Object.class));
            // Invalid unwrap

        assertEquals(tree1, tree2);
        assertFalse(tree1.equals(tree3));
    }

    // Test case for the unwrap method
    @Test
    void testUnwrap() {
        SmbTreeImpl tree = new SmbTreeImpl(session, "SHARE", "A:");
        SmbTreeImpl unwrapped = tree.unwrap(SmbTreeImpl.class);
        assertEquals(tree, unwrapped);
        // Test unwrapping to a non-assignable type should fail

                            .unwrap(SmbTransportInternal.class);
                    final SmbTransportInternal trans = this.exclusiveTransport;
                    try (SmbSessionInternal smbSession = trans.getSmbSession(this.ctx, host, targetDomain).unwrap(SmbSessionInternal.class);
                            SmbTreeImpl uct = smbSession.getSmbTree(share, null).unwrap(SmbTreeImpl.class);

        verify(tree).send(request, param);
    }

    @Test
    @DisplayName("unwrap and close are available via SmbTree")
    void unwrap_and_close_interactions() {
        // Arrange
        when(tree.unwrap(SmbTreeInternal.class)).thenReturn(tree);

        // Act
        SmbTree unwrapped = tree.unwrap(SmbTreeInternal.class);
        tree.close();

        // Assert
        assertNotNull(unwrapped);