this.root = root;
            this.invalidator = invalidator;
            this.shouldKeep = shouldKeep;
        }

        @Override
        public SnapshotVisitResult visitEntry(FileSystemLocationSnapshot snapshot) {
            if (shouldKeep.test(snapshot)) {
                return SnapshotVisitResult.CONTINUE;
            } else {

            @Override
            public void leaveDirectory(DirectorySnapshot directorySnapshot) {
                indent--;
            }

            @Override
            public SnapshotVisitResult visitEntry(FileSystemLocationSnapshot snapshot) {
                for (int i = 0; i < indent; i++) {
                    builder.append("  ");
                }
                builder.append(" - ");

            this.treePath = "tree-" + escape(treeName);
            this.treeRoot = treePath + "/";
            this.type = type;
        }

        @Override
        public SnapshotVisitResult visitEntry(FileSystemLocationSnapshot snapshot, RelativePathSupplier relativePath) {
            boolean isRoot = relativePath.isRoot();
            String targetPath = getTargetPath(relativePath);