*
     * @param <T> the target type to unwrap to
     * @param type the class of the target type
     * @return the referral adapted to type
     * @throws ClassCastException
     *             if the type is not valid for this object
     */
    <T extends DfsReferralData> T unwrap(Class<T> type);

    /**
     * Get the server this referral points to
     *

     */
    @Test
    void testUnwrap_throwsException() {
        when(smbTree.unwrap(any())).thenThrow(new ClassCastException("Cannot unwrap to specified type"));

        assertThrows(ClassCastException.class, () -> smbTree.unwrap(CustomSmbTree.class),
                "Should throw ClassCastException when type is incompatible");
    }

    /**
     * Test for close() method under normal conditions.

        // Happy path: unwrap to concrete type
        SmbPipeHandleImpl unwrapped = target.unwrap(SmbPipeHandleImpl.class);
        assertSame(target, unwrapped);

        // Incompatible type: expect ClassCastException
        class OtherPipeHandle implements SmbPipeHandle {
            @Override
            public SmbPipeResource getPipe() {
                return mock(SmbPipeResource.class);
            }

                    return type.cast(this);
                }
                throw new ClassCastException("Cannot unwrap to " + type.getName());
            }

            @Override
            public void close() {
                // no-op for test
            }
        }
        assertThrows(ClassCastException.class, () -> transport.unwrap(OtherTransport.class));
    }

    @Test

        infoField.setAccessible(true);
        infoField.set(msrpcShareGetInfo, info0);

        // This should throw ClassCastException
        assertThrows(ClassCastException.class, () -> {
            msrpcShareGetInfo.getSecurity();
        });
    }

    @Test
    void testGetSecurityWhenInfoIsNull() throws Exception {

        assertSame(session, session.unwrap(jcifs.SmbSession.class));

        // Edge: force incompatible class via raw type to trigger ClassCastException
        assertThrows(ClassCastException.class, () -> session.unwrap((Class) String.class));
    }

    @Test
    @DisplayName("toString contains key identifiers")
    void testToString() {

        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
            assertThrows(ClassCastException.class, () -> sid.unwrap(String.class));
        }

        SmbTreeImpl unwrapped = tree.unwrap(SmbTreeImpl.class);
        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() {

        }

        @Override
        public <T extends Credentials> T unwrap(Class<T> type) {
            if (type.isInstance(this)) {
                return type.cast(this);
            }
            throw new ClassCastException("Cannot unwrap to " + type.getName());
        }
    }

    static class SelfRenewingCreds extends BaseCreds {
        @Override
        public CredentialsInternal renew() {

    @Override
    public <T extends SmbTree> T unwrap(final Class<T> type) {
        if (type.isAssignableFrom(this.getClass())) {
            return (T) this;
        }
        throw new ClassCastException();
    }

    /**
     * @param track
     * @return tree with increased usage count
     */
    public SmbTreeImpl acquire(final boolean track) {