// Test with null classification name
        try {
            provider.provide(null);
            fail("Should throw exception for null classification name");
        } catch (ProvidedClassificationNotFoundException e) {
            // expected
            assertTrue(e.getMessage().contains("Not found the classification: null"));
        } catch (NullPointerException e) {

                    && targ.getMechanismListMIC() != null) {
                // this indicates that mechlistMIC is required by the server
                verifyMechListMIC(targ.getMechanismListMIC());
                return new NegTokenTarg(NegTokenTarg.UNSPECIFIED_RESULT, null, null, calculateMechListMIC());
            }

    }

    @Test
    public void test_add_nullOrigin() {
        // Setup
        TestCorsHandler handler = new TestCorsHandler("null-origin-handler");

        // Execute
        corsHandlerFactory.add(null, handler);
        CorsHandler result = corsHandlerFactory.get(null);

        // Verify
        assertNotNull(result);
        assertEquals(handler, result);
    }

    @Test

      codePoint == '%'.code &&
      (!alreadyEncoded || strict && !input.isPercentEncoded(i, limit))
    ) {
      // Percent encode this character.
      if (encodedCharBuffer == null) {
        encodedCharBuffer = Buffer()
      }

      if (charset == null || charset == Charsets.UTF_8) {
        encodedCharBuffer.writeUtf8CodePoint(codePoint)
      } else {

            _dst.enc_ndr_referent(stores, 1);

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

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

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

        // Simulate successful RPC call
        doAnswer(invocation -> {
            MsrpcSamrOpenDomain rpc = invocation.getArgument(0);
            rpc.retval = 0; // Success
            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcSamrOpenDomain.class));

        // Act
        SamrDomainHandle handle = new SamrDomainHandle(mockDcerpcHandle, mockPolicyHandle, access, mockSid);

        // Assert

        return null;
    }

    @Override
    protected String createFromHint() {
        return null;
    }

    @Override
    protected String createSqlSuffix() {
        return null;
    }

    @Override
    public void fetchFirst(int fetchSize) {
        _fetchScopeEffective = true;
        if (fetchSize < 0) {
            String msg = "Argument[fetchSize] should be plus: " + fetchSize;

        // Test constructor with null message
        ThumbnailGenerationException exception = new ThumbnailGenerationException(null);

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructorWithNullMessageAndCause() {
        // Test constructor with null message and null cause

        @Test
        @DisplayName("toString should handle null fields")
        void testToString_NullFields() {
            // Given
            CIFSContext mockContext = createMockContext();
            Type2Message message = new Type2Message(mockContext, Type2Message.NTLMSSP_NEGOTIATE_UNICODE, null, null);
            message.setContext(null);
            message.setTargetInformation(null);

            // When

     * @return the converted value or null if not found or conversion fails
     */
    @SuppressWarnings("unchecked")
    public static <T> T getValue(final Map<String, Object> doc, final String key, final Class<T> clazz) {
        if (doc == null || key == null) {
            return null;
        }

        final Object value = doc.get(key);
        if (value == null) {
            return null;
        }