int result = 1;
        result = prime * result + ((value1 == null) ? 0 : value1.hashCode());
        result = prime * result + ((value2 == null) ? 0 : value2.hashCode());
        result = prime * result + ((value3 == null) ? 0 : value3.hashCode());
        result = prime * result + ((value4 == null) ? 0 : value4.hashCode());
        result = prime * result + ((value5 == null) ? 0 : value5.hashCode());
        return result;
    }

    void equalsAndHashCode_subjectSemantics() {
        Kerb5Authenticator a = new Kerb5Authenticator((Subject) null);
        Kerb5Authenticator b = new Kerb5Authenticator((Subject) null);

        // Both null subjects -> equal
        assertEquals(a, b);
        assertEquals(a.hashCode(), b.hashCode());

        // Mixed null/non-null -> not equal
        Kerb5Authenticator c = new Kerb5Authenticator(new Subject());

        final ExtractData result = textExtractor.getText(in, null);

        assertNotNull(result);
        assertNotNull(result.getContent());
    }

    /**
     * Test that null input stream throws CrawlerSystemException with correct message.
     */
    public void test_getText_nullInputStream_throwsWithMessage() {
        try {
            textExtractor.getText(null, null);
            fail("Expected CrawlerSystemException");

        try {
            pdfExtractor.getText(null, null);
            fail();
        } catch (final CrawlerSystemException e) {
            // NOP
        }
    }

    public void test_getPassword_null() {
        String url;
        String resourceName;
        HashMap<String, String> params = new HashMap<>();

        url = null;
        resourceName = null;
        params.put(ExtractData.URL, url);

        this.sessionKey = sessionKey != null ? sessionKey.clone() : null;
        this.preauthIntegrityHash = preauthHash != null ? preauthHash.clone() : null;

        // Generate unique session ID for key management
        this.sessionId = String.format("smb-enc-%d-%d", System.currentTimeMillis(), secureRandom.nextLong());

        if (keyManager != null) {
            // Store keys securely

        final String value = getHttpFileuploadMaxSize();
        return value != null ? DfTypeUtil.toLong(value) : null;
    }

    String getHttpFileuploadThresholdSize();

    default Long getHttpFileuploadThresholdSizeAsLong() {
        final String value = getHttpFileuploadThresholdSize();
        return value != null ? DfTypeUtil.toLong(value) : null;
    }

    String getPasswordInvalidAdminPasswords();

    @Test
    @DisplayName("createContext accepts null/empty optional parameters")
    void createContext_edge_parameters_ok() throws Exception {
        TestCredentials creds = new TestCredentials("D", false, false, new Subject(), false);
        // Intentionally pass null/empty values for optional parameters; expect no exception
        SSPContext ctx1 = creds.createContext(mockContext, null, "", null, false);
        assertNotNull(ctx1);
    }

            if (this.path != null) {
                _dst = _dst.deferred;
                _dst.enc_ndr_string(this.path);

            }
            if (this.comment != null) {
                _dst = _dst.deferred;
                _dst.enc_ndr_string(this.comment);

            }
            if (this.stores != null) {
                _dst = _dst.deferred;

            if (synonymMap != null && synonymMap.fst == null) {
                this.synonymMap = null;
            }
        } else {
            this.synonymLoader = null;
        }
        if (synonymMap != null) {
            this.fst = synonymMap.fst;
            this.fstReader = fst.getBytesReader();
            scratchArc = new FST.Arc<>();
        }

        ch = 0;

        if (value != null) {
            this.defaultUserName = value;
        }

        value = props.getProperty("jcifs.smb.client.password");
        if (value != null) {
            this.defaultPassword = value;
        }

        value = props.getProperty("jcifs.smb.client.domain");
        if (value != null) {
            this.defaultDomain = value;
        }