Class<?> utilClass = SmbEnumerationUtil.class;

            // Act
            Object unwrapped = invokePrivate(utilClass, "unwrapDOSFilter", new Class<?>[] { ResourceFilter.class }, wrapper);

            // Assert
            assertNotNull(unwrapped);
            assertTrue(unwrapped instanceof DosFileFilter);

            // Verify fields preserved (via reflection since they are protected)

        doNothing().when(smbTree).close();
        doNothing().when(customTree).close();

        // Unwrap then close both
        CustomSmbTree unwrapped = smbTree.unwrap(CustomSmbTree.class);
        smbTree.close();
        unwrapped.close();

        verify(smbTree).unwrap(CustomSmbTree.class);
        verify(smbTree).close();
        verify(customTree).close();
    }

    /**

        // Given
        when(mockAddress.unwrap(Address.class)).thenReturn(mockAddress);

        // When & Then
        Address unwrapped = mockAddress.unwrap(Address.class);
        assertSame(mockAddress, unwrapped, "Should return same instance for supported type");
    }

    @Test
    @DisplayName("getHostName should return valid hostname or address")
    void testGetHostNameContract() {

        // Act & Assert
        // unwrap to interface itself should return same instance
        CredentialsInternal unwrapped = creds.unwrap(CredentialsInternal.class);
        assertNotNull(unwrapped, "unwrap to CredentialsInternal returns instance");
        assertSame(creds, unwrapped, "unwrap returns the same object instance");

        // unwrap to unrelated type should return null (use another Credentials implementation)

    checkNotNull(type);

    // cast is safe: long.class and Long.class are both of type Class<Long>
    @SuppressWarnings("unchecked")
    Class<T> unwrapped = (Class<T>) WRAPPER_TO_PRIMITIVE_TYPE.get(type);
    return (unwrapped == null) ? type : unwrapped;
  }

        // Act
        SmbTransport result = smbTransport.unwrap(SmbTransport.class);

        // Assert
        assertNotNull(result, "Unwrapped transport should not be null");
        assertEquals(mockUnwrappedTransport, result, "Returned unwrapped transport should be the mocked one");
        verify(smbTransport).unwrap(SmbTransport.class); // Verify that the method was called
    }

    @Test

        assertEquals(2, lsarSidArrayX.sids.length, "sids array length should match");
        assertEquals(sidT1, lsarSidArrayX.sids[0].sid, "First SID should be unwrapped correctly");
        assertEquals(sidT2, lsarSidArrayX.sids[1].sid, "Second SID should be unwrapped correctly");
    }

    @Test
    void testConstructorWithJcifsSIDArrayDirectAssignment() {
        // Create mock SID objects
        SID mockSid1 = mock(SID.class);

    void testUnwrap() {
        // Given
        when(mockCredentials.unwrap(Credentials.class)).thenReturn(mockCredentials);

        // When
        Credentials unwrapped = mockCredentials.unwrap(Credentials.class);

        // Then
        assertSame(mockCredentials, unwrapped);
        verify(mockCredentials).unwrap(Credentials.class);
    }

    @Test
    @DisplayName("Should get user domain")
    void testGetUserDomain() {

        // Arrange
        when(tree.unwrap(SmbTreeInternal.class)).thenReturn(tree);

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

        // Assert
        assertNotNull(unwrapped);
        verify(tree).unwrap(SmbTreeInternal.class);
        verify(tree).close();
    }

    /**
     * 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.
     *
     * @return the resolved host name, or the host address if it could not be resolved
     */