private final Node rootNode;

        PrefixFileSet(File rootDir) {
            this(toAbsolutePath(rootDir));
        }

        PrefixFileSet(String rootPath) {
            String path = removeTrailingSeparator(rootPath);
            this.rootNode = new Node(path);
        }

        PrefixFileSet(Node rootNode) {
            this.rootNode = rootNode;
        }

        @VisibleForTesting

            AtomicBoolean hasBeenFiltered = new AtomicBoolean();
            Path rootPath = Paths.get(absolutePath);
            PathVisitor visitor = new PathVisitor(predicate, hasBeenFiltered, hasher, stringInterner, defaultExcludes, collector, EMPTY_SYMBOLIC_LINK_MAPPING, previouslyKnownSnapshots, unfilteredSnapshotRecorder);
            Files.walkFileTree(rootPath, DONT_FOLLOW_SYMLINKS, Integer.MAX_VALUE, visitor);

	}

	// Look for vendor.json declaring import path.
	data, _ = os.ReadFile(filepath.Join(dir, "vendor/vendor.json"))
	var cfg2 struct{ RootPath string }
	json.Unmarshal(data, &cfg2)
	if cfg2.RootPath != "" {
		return cfg2.RootPath, nil
	}

	// Look for path in GOPATH.
	var badPathErr error
	for _, gpdir := range filepath.SplitList(cfg.BuildContext.GOPATH) {
		if gpdir == "" {

reportDataFromTree_(root,rootPath){const rootPathString=stringifyPathName_(rootPath);if(this.visitedSet_.has(rootPathString))return;this.visitedSet_.add(rootPathString);this.reportValuesFromNode_(root,rootPath);for(let dimension=0;dimension<root.children.length;dimension++){const children=root.children[dimension];for(const[name,node]of children){const childPath=clonePath_(rootPath);childPath[dimension].push(name);this.reportDataFromTree_(node,childPath);}}}...