@Test
  public void canBeReconstitutedFromByteArray() throws Exception {
    String key = impl.getStorageKey();
    HttpCacheEntry entry = impl.getHttpCacheEntry();
    byte[] bytes = impl.toByteArray();
    impl = new MemcachedCacheEntryImpl();
    impl.set(bytes);

    assertEquals(key, impl.getStorageKey());
    assertEquivalent(entry, impl.getHttpCacheEntry());
  }
 @Test
 public void canBeSerialized() {
   byte[] bytes = impl.toByteArray();
   assertNotNull(bytes);
   assertTrue(bytes.length > 0);
 }