core/src/main/java/org/apache/sling/cms/core/internal/jobs/FileMetadataExtractorJob.java [58:81]:
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    @Reference
    private ResourceResolverFactory factory;

    private void collectFiles(Resource root, List<File> files) {
        for (Resource child : root.getChildren()) {
            if (CMSConstants.NT_FILE.equals(child.getResourceType())) {
                files.add(child.adaptTo(File.class));
            } else {
                collectFiles(child, files);
            }
        }
    }

    @Override
    public JobExecutionResult doProcess(Job job, JobExecutionContext context, ResourceResolver resolver) {
        String path = job.getProperty(SlingConstants.PROPERTY_PATH, "");

        Resource root = resolver.getResource(path);
        if (root != null) {
            List<File> files = new ArrayList<>();
            if (CMSConstants.NT_FILE.equals(root.getResourceType())) {
                files.add(root.adaptTo(File.class));
            } else {
                collectFiles(root, files);
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core/src/main/java/org/apache/sling/cms/core/internal/jobs/OptimizeFilesJob.java [55:78]:
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    @Reference
    private ResourceResolverFactory factory;

    private void collectFiles(Resource root, List<File> files) {
        for (Resource child : root.getChildren()) {
            if (CMSConstants.NT_FILE.equals(child.getResourceType())) {
                files.add(child.adaptTo(File.class));
            } else {
                collectFiles(child, files);
            }
        }
    }

    @Override
    public JobExecutionResult doProcess(Job job, JobExecutionContext context, ResourceResolver resolver) {
        String path = job.getProperty(SlingConstants.PROPERTY_PATH, "");

        Resource root = resolver.getResource(path);
        if (root != null) {
            List<File> files = new ArrayList<>();
            if (CMSConstants.NT_FILE.equals(root.getResourceType())) {
                files.add(root.adaptTo(File.class));
            } else {
                collectFiles(root, files);
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