@Test
public void test206ResponseIncludesVariantHeadersIfValueMightDiffer() throws Exception {
final HttpRequestWrapper req1 = HttpRequestWrapper.wrap(
new BasicHttpRequest("GET", "/", HttpVersion.HTTP_1_1));
req1.addHeader("Accept-Encoding", "gzip");
final Date now = new Date();
final Date inOneHour = new Date(now.getTime() + 3600 * 1000L);
originResponse.addHeader("Cache-Control", "max-age=3600");
originResponse.addHeader("Expires", DateUtils.formatDate(inOneHour));