.addEqualityGroup(parse("maximumWeight=15"), parse("maximumWeight=15"))
        .addEqualityGroup(parse("expireAfterAccess=60s"), parse("expireAfterAccess=1m"))
        .addEqualityGroup(parse("expireAfterAccess=60m"), parse("expireAfterAccess=1h"))
        .addEqualityGroup(parse("expireAfterWrite=60s"), parse("expireAfterWrite=1m"))

    }
    if (expireAfterWrite != null) {
      builder.expireAfterWrite(expireAfterWrite.duration, expireAfterWrite.unit);
    }
    if (expireAfterAccess != null) {
      builder.expireAfterAccess(expireAfterAccess.duration, expireAfterAccess.unit);
    }
    if (refresh != null) {
      builder.refreshAfterWrite(refresh.duration, refresh.unit);
    }
    if (keyStrength != null) {

    assertThrows(
        IllegalStateException.class,
        () -> builder.expireAfterAccess(java.time.Duration.ofSeconds(3600)));
  }

  @SuppressWarnings("ReturnValueIgnored")
  public void testTimeToIdleAndToLive() {
    CacheBuilder.newBuilder()
        .expireAfterWrite(1, NANOSECONDS)
        .expireAfterAccess(1, NANOSECONDS)

 *   <li>{@code maximumSize=[long]}: sets {@link CacheBuilder#maximumSize}.
 *   <li>{@code maximumWeight=[long]}: sets {@link CacheBuilder#maximumWeight}.
 *   <li>{@code expireAfterAccess=[duration]}: sets {@link CacheBuilder#expireAfterAccess}.
 *   <li>{@code expireAfterWrite=[duration]}: sets {@link CacheBuilder#expireAfterWrite}.
 *   <li>{@code refreshAfterWrite=[duration]}: sets {@link CacheBuilder#refreshAfterWrite}.

        .addEqualityGroup(parse("maximumWeight=15"), parse("maximumWeight=15"))
        .addEqualityGroup(parse("expireAfterAccess=60s"), parse("expireAfterAccess=1m"))
        .addEqualityGroup(parse("expireAfterAccess=60m"), parse("expireAfterAccess=1h"))
        .addEqualityGroup(parse("expireAfterWrite=60s"), parse("expireAfterWrite=1m"))

  }

  public void testExpiration_expireAfterAccess() {
    FakeTicker ticker = new FakeTicker();
    CountingRemovalListener<String, Integer> removalListener = countingRemovalListener();
    WatchedCreatorLoader loader = new WatchedCreatorLoader();
    LoadingCache<String, Integer> cache =
        CacheBuilder.newBuilder()
            .expireAfterAccess(EXPIRING_TIME, MILLISECONDS)

    assertTrue(listener.isEmpty());
    checkEmpty(cache);
  }

  public void testGet_expireAfterAccess() {
    Object computed = new Object();
    LoadingCache<Object, Object> cache =
        CacheBuilder.newBuilder()
            .expireAfterAccess(0, SECONDS)
            .removalListener(listener)
            .build(constantLoader(computed));

    Object key = new Object();

   * @throws IllegalStateException if {@link #expireAfterAccess} was already set
   */
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  @CanIgnoreReturnValue
  public CacheBuilder<K, V> expireAfterAccess(long duration, TimeUnit unit) {
    checkState(
        expireAfterAccessNanos == UNSET_INT,
        "expireAfterAccess was already set to %s ns",
        expireAfterAccessNanos);

    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
    try {
      builder.expireAfterAccess(-1, SECONDS);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  @SuppressWarnings("ReturnValueIgnored")
  public void testTimeToIdle_small() {
    CacheBuilder.newBuilder().expireAfterAccess(1, NANOSECONDS).build(identityLoader());
    // well, it didn't blow up.
  }

  }

  public void testExpiration_expireAfterAccess() {
    FakeTicker ticker = new FakeTicker();
    CountingRemovalListener<String, Integer> removalListener = countingRemovalListener();
    WatchedCreatorLoader loader = new WatchedCreatorLoader();
    LoadingCache<String, Integer> cache =
        CacheBuilder.newBuilder()
            .expireAfterAccess(EXPIRING_TIME, MILLISECONDS)