private static final Map<String, byte[]> TARGET_INFO_CACHE = new HashMap<>();

    private static byte[] getDefaultTargetInfo(final CIFSContext tc) {
        final String domain = tc.getConfig().getDefaultDomain();
        byte[] ti = TARGET_INFO_CACHE.get(domain);
        if (ti != null) {
            return ti;
        }

        ti = makeTargetInfo(tc, domain);
        TARGET_INFO_CACHE.put(domain, ti);

        this(getDefaultFlags(type1), challenge,
                type1 != null && target == null && type1.getFlag(NTLMSSP_REQUEST_TARGET) ? getDefaultDomain() : target);
    }

    /**
     * Creates a Type-2 message with the specified parameters.
     *
     * @param flags The flags to apply to this message.

        // Setup mock configuration with required methods
        when(mockConfig.getDefaultUsername()).thenReturn(null);
        when(mockConfig.getDefaultPassword()).thenReturn(null);
        when(mockConfig.getDefaultDomain()).thenReturn(null);
        when(mockConfig.getBufferCacheSize()).thenReturn(16);
        when(mockConfig.getMaximumBufferSize()).thenReturn(65536);

        context = new BaseContext(mockConfig);
    }

    }

    /**
     * Creates a Type-3 message using default values from the current
     * environment.
     */
    public Type3Message() {
        setFlags(getDefaultFlags());
        setDomain(getDefaultDomain());
        setUser(getDefaultUser());
        setWorkstation(getDefaultWorkstation());
    }

    /**
     * Creates a Type-3 message in response to the given Type-2 message

        return this.delegate.getLogonShare();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Configuration#getDefaultDomain()
     */
    @Override
    public String getDefaultDomain() {
        return this.delegate.getDefaultDomain();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Configuration#getDefaultUsername()
     */
    @Override

                        log.debug("Unknown host", uhe);
                        if (this.ctx.getConfig().getDefaultDomain() == null) {
                            throw uhe;
                        }
                        this.addresses = this.ctx.getNameServiceClient().getAllByName(this.ctx.getConfig().getDefaultDomain(), true);
                    }
                } else if (path.length() == 0 || path.equals("/")) {

        // Given
        when(mockDelegate.getOemEncoding()).thenReturn("UTF-8");
        when(mockDelegate.getNetbiosHostname()).thenReturn("TESTHOST");
        when(mockDelegate.getDefaultDomain()).thenReturn("WORKGROUP");
        when(mockDelegate.getDefaultUsername()).thenReturn("testuser");
        when(mockDelegate.getDefaultPassword()).thenReturn("testpass");

        // Then
        assertNotNull(config);
        assertEquals("testuser", config.getDefaultUsername());
        assertEquals("testpass", config.getDefaultPassword());
        assertEquals("testdomain", config.getDefaultDomain());
    }

    @Test
    @DisplayName("Should handle null properties gracefully")
    void testNullProperties() throws CIFSException {
        // PropertyConfiguration doesn't handle null properties

     */
    String getLogonShare();

    /**
     *
     *
     * Property {@code jcifs.smb.client.domain}
     *
     * @return default credentials, domain name
     */
    String getDefaultDomain();

    /**
     *
     * Property {@code jcifs.smb.client.username}
     *
     * @return default credentials, user name
     */
    String getDefaultUsername();

    /**
     *

     * environment.
     *
     * @param tc
     *            context to use
     */
    public Type3Message(final CIFSContext tc) {
        setFlags(getDefaultFlags(tc));
        setDomain(tc.getConfig().getDefaultDomain());
        setUser(tc.getConfig().getDefaultUsername());
        setWorkstation(tc.getNameServiceClient().getLocalHost().getHostName());
    }

    /**