}

    abstract protected Provider<File> getBackingFileProvider();

    private File getBackingFile() {
        return getBackingFileProvider().get();
    }

    @Override
    public void visitStructure(MinimalFileTreeStructureVisitor visitor, FileTreeInternal owner) {
        File backingFile = getBackingFile();
        visitor.visitFileTreeBackedByFile(backingFile, owner, this);
    }

    @Override

                && ((ReadableResourceInternal) path).getBackingFile() != null;
            if (!hasBackingFile) {
                throw new InvalidUserCodeException("Cannot use tarTree() on a resource without a backing file.");
            }
            return providers.provider(() -> ((ReadableResourceInternal) path).getBackingFile());
        }
        if (path instanceof Provider) {