assertArrayEquals(new String[] { "application/json", "text/html" }, acceptValuesLowercase);
        assertArrayEquals(new String[0], missingValues);
    }

    @Test
    public void testGetHeaderValueMultipleValues() {
        CurlResponse response = new CurlResponse();
        Map<String, List<String>> headers = new HashMap<>();
        headers.put("Accept", Arrays.asList("application/json", "text/html"));