ForkJoinPool pool = new ForkJoinPool();

        CurlRequest result = request.threadPool(pool);

        assertSame(request, result); // Fluent API
    }

    @Test
    public void testEncodingSpecialCharacters() {
        CurlRequest request = new CurlRequest(Method.GET, "https://example.com");

        // Test encoding of special characters
        request.param("query", "hello world & more");