assertNull(dataconfigpager.id);
        assertNull(dataconfigpager.name);
        assertNull(dataconfigpager.handlerName);
        assertNull(dataconfigpager.boost);
        assertNull(dataconfigpager.available);
        assertNull(dataconfigpager.sortOrder);
        assertNull(dataconfigpager.createdBy);
        assertNull(dataconfigpager.createdTime);

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_constructor_withNullMessageAndCause() {
        // Test constructor with both null message and cause
        FessSystemException exception = new FessSystemException(null, null);

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

  public void testParse_empty() {
    CacheBuilderSpec spec = parse("");
    assertNull(spec.initialCapacity);
    assertNull(spec.maximumSize);
    assertNull(spec.maximumWeight);
    assertNull(spec.concurrencyLevel);
    assertNull(spec.keyStrength);
    assertNull(spec.valueStrength);
    assertNull(spec.writeExpirationTimeUnit);
    assertNull(spec.accessExpirationTimeUnit);

        assertNull(exception.getCause());
    }

    public void test_constructor_withNullMessage() {
        // Test constructor with null message
        String type = "OAuth2";
        String message = null;
        InvalidAccessTokenException exception = new InvalidAccessTokenException(type, message);

        assertEquals(type, exception.getType());
        assertNull(exception.getMessage());

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
        assertEquals(messageCode, exception.getMessageCode());
    }

    public void test_constructor_twoParametersWithBothNull() {
        // Execute
        final SsoMessageException exception = new SsoMessageException(null, null);

        // Verify
        assertNotNull(exception);
        assertNull(exception.getMessage());

    )
  }

  @Test fun nonBasicCodePointInPrefix() {
    assertNull(Punycode.decode("xn--cåt-n3h"))
  }

  @Test fun nonBasicCodePointInInsertionCoding() {
    assertNull(Punycode.decode("xn--cat-ñ3h"))
  }

  @Test fun unterminatedCodePoint() {
    assertNull(Punycode.decode("xn--cat-n"))
  }

  @Test fun overflowI() {
    assertNull(Punycode.decode("xn--99999999"))
  }

        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        assertFalse(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertNull(range.getSelectedVersion(artifact), CHECK_SELECTED_VERSION);

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

    public void test_inheritanceFromFessSystemException() {
        // Setup
        final String message = "Test inheritance hierarchy";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute

        assertFalse(ssoManager.available());

        // Verify all operations return null
        assertNull(ssoManager.getLoginCredential());
        assertNull(ssoManager.getResponse(SsoResponseType.METADATA));
        assertNull(ssoManager.getResponse(SsoResponseType.LOGOUT));
        assertNull(ssoManager.logout(FessUserBean.empty()));
    }

    // Helper classes for testing

    }

    // Test default constructor
    public void test_constructor() {
        FacetInfo info = new FacetInfo();
        assertNull(info.field);
        assertNull(info.query);
        assertNull(info.size);
        assertNull(info.minDocCount);
        assertNull(info.sort);
        assertNull(info.missing);
    }

    // Test init method with various configurations
    public void test_init_withAllFields() {