themeHelper.closeQuietly(existingDir);
        // Directory should be deleted
        assertFalse(Files.exists(existingDir));
    }

    public void test_closeQuietly_nestedDirectory() throws IOException {
        Path nestedDir = tempDir.resolve("parent").resolve("child");
        Files.createDirectories(nestedDir);
        Files.createFile(nestedDir.resolve("test.txt"));