*/
    public boolean getDidWork() {
        return didWork;
    }

    private void markParentDirForDeletion(File f) {
        markDirForDeletion(f.getParentFile());
    }

    private void markDirForDeletion(@Nullable File dir) {
        if (dir != null && dirSafeToDelete.test(dir)) {
            directoriesToDelete.add(dir);
        }
    }

    /**