assertNotNull("Allow-Private-Network header should be set", responseHeaders.get("Access-Control-Allow-Private-Network"));
    }

    // Test process with non-HttpServletResponse
    public void test_processWithNonHttpServletResponse() {
        String testOrigin = "https://example.com";
        HttpServletRequest request = createMockRequest();
        ServletResponse response = new ServletResponse() {
            @Override