// Determine target model version
        // Default to 4.0.0 unless --all is specified or explicit --model-version is provided
        String targetModel;
        if (options.modelVersion().isPresent()) {
            targetModel = options.modelVersion().get();
        } else if (options.all().orElse(false)) {
            targetModel = MODEL_VERSION_4_1_0;
        } else {

     */
    private String determineTargetModelVersion(UpgradeContext context) {
        UpgradeOptions options = getOptions(context);

        if (options.modelVersion().isPresent()) {
            return options.modelVersion().get();
        } else if (options.all().orElse(false)) {
            return MODEL_VERSION_4_1_0;
        } else {
            return MODEL_VERSION_4_0_0;
        }

    LinkedHashSet<Class<?>> candidateClasses = new LinkedHashSet<>();
    for (Class<?> cls : classes) {
      Optional<String> testedClassName = TEST_SUFFIX.chop(cls.getName());
      if (testedClassName.isPresent()) {
        Class<?> testedClass = classMap.get(testedClassName.get());
        if (testedClass != null) {
          testClasses.put(testedClass, cls);
        }
      } else {
        candidateClasses.add(cls);

     * <p>
     * <strong>Implementation Note:</strong> The default implementation is equivalent to:
     * </p>
     * <pre>{@code
     * Optional<Path> configured = targetPath();
     * if (configured.isPresent() && configured.get().isAbsolute()) {
     *     return configured.get();
     * }
     * Path outputDir = project.getOutputDirectory(scope());
     * return configured.map(outputDir::resolve).orElse(outputDir);

        if (noOptionsSpecified || allOptionsDisabled) {
            return true;
        }

        // Check if --model is explicitly set (and not part of "all disabled" scenario)
        if (options.model().isPresent()) {
            return options.model().get();
        }

        return false;
    }

    @Override
    public String getDescription() {
        return "Applying Maven 4 compatibility fixes";

        cmdList.add(fessConfig.getJavaCommandPath());

        // -cp
        cmdList.add("-cp");
        final StringBuilder buf = new StringBuilder(100);
        ResourceUtil.getOverrideConfPath().ifPresent(p -> {
            buf.append(p);
            buf.append(cpSeparator);
        });
        final String confPath = System.getProperty(Constants.FESS_CONF_PATH);
        if (StringUtil.isNotBlank(confPath)) {

            throw new IllegalArgumentException(msg);
        }
        final StringBuilder sb = new StringBuilder();
        LaRequestUtil.getOptionalRequest().map(HttpServletRequest::getContextPath).filter(s -> s.length() > 1).ifPresent(s -> sb.append(s));
        sb.append(input);
        if (input.indexOf('?') == -1) {
            try {
                final Long value = resourceHashCache.get(input);
                if (value.longValue() > 0) {

    LinkedHashSet<Class<?>> candidateClasses = new LinkedHashSet<>();
    for (Class<?> cls : classes) {
      Optional<String> testedClassName = TEST_SUFFIX.chop(cls.getName());
      if (testedClassName.isPresent()) {
        Class<?> testedClass = classMap.get(testedClassName.get());
        if (testedClass != null) {
          testClasses.put(testedClass, cls);
        }
      } else {
        candidateClasses.add(cls);

                            final String configId = (String) doc.get(fessConfig.getIndexFieldConfigId());
                            crawlingConfigHelper.getPipeline(configId).ifPresent(s -> builder.setPipeline(s));
                        });
                if (response.hasFailures()) {
                    if (logger.isDebugEnabled()) {

        boolean useAll = options.all().orElse(false);
        if (useAll) {
            return true;
        }

        // Check if --infer is explicitly set
        if (options.infer().isPresent()) {
            return options.infer().get();
        }

        // Apply default behavior: if no specific options are provided, enable --infer
        if (options.infer().isEmpty()