if err != nil {
		t.Fatal(err)
	}

	if err = os.MkdirAll(pathJoin(rootPath, minioMetaBucket), os.FileMode(0o755)); err != nil {
		t.Fatal(err)
	}

	if err = os.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0o644)); err != nil {
		t.Fatal(err)
	}

	formatData, _, err := formatErasureMigrate(rootPath)
	if err != nil {
		t.Fatal(err)
	}

        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