SortedSet<V> valueSet = (SortedSet<V>) valueCollection;
      assertEquals(multimap().valueComparator(), valueSet.comparator());
    }
  }

  public void testAsMapGetImplementsSortedSet() {
    for (K key : multimap().keySet()) {
      SortedSet<V> valueSet = (SortedSet<V>) multimap().asMap().get(key);
      assertEquals(multimap().valueComparator(), valueSet.comparator());
    }
  }

   * @return a new decorated set containing a collection of values for one key
   */
  @Override
  Collection<V> createCollection(@ParametricNullness K key) {
    return new ValueSet(key, valueSetCapacity);
  }

  /**
   * {@inheritDoc}
   *
   * <p>If {@code values} is not empty and the multimap already contains a mapping for {@code key},

        valuesBuilder.add(requireNonNull(stream.readObject()));
      }
      ImmutableSet<Object> valueSet = valuesBuilder.build();
      if (valueSet.size() != valueCount) {
        throw new InvalidObjectException("Duplicate key-value pairs exist for key " + key);
      }
      builder.put(key, valueSet);
      tmpSize += valueCount;
    }

    ImmutableMap<Object, ImmutableSet<Object>> tmpMap;
    try {

        return false;
      }
    }
  }

  @LazyInit private transient Set<V> valueSet;

  @Override
  public Set<V> values() {
    Set<V> result = valueSet;
    return (result == null) ? valueSet = new ValueSet() : result;
  }

  final class ValueSet extends View<K, V, V> {
    ValueSet() {
      super(HashBiMap.this);
    }

    @Override
    @ParametricNullness

    WeakValueReference<Object, Object, ?> valueRef = segment.getWeakValueReferenceForTesting(entry);

    // clear absent
    assertFalse(segment.clearValueForTesting(key, hash, valueRef));

    segment.setTableEntryForTesting(0, entry);
    // don't increment count; this is used during computation
    assertTrue(segment.clearValueForTesting(key, hash, valueRef));
    // no notification sent with clearValue

    WeakValueReference<Object, Object, ?> valueRef = segment.getWeakValueReferenceForTesting(entry);

    // clear absent
    assertFalse(segment.clearValueForTesting(key, hash, valueRef));

    segment.setTableEntryForTesting(0, entry);
    // don't increment count; this is used during computation
    assertTrue(segment.clearValueForTesting(key, hash, valueRef));
    // no notification sent with clearValue

    }
  }

  @LazyInit @CheckForNull private transient Set<V> valueSet;

  @Override
  public Set<V> values() {
    /*
     * We can almost reuse the inverse's keySet, except we have to fix the
     * iteration order so that it is consistent with the forward map.
     */
    Set<V> result = valueSet;
    return (result == null) ? valueSet = new ValueSet() : result;
  }

  @WeakOuter

    LoadingValueReference<Object, Object> valueRef = new LoadingValueReference<>();
    entry.setValueReference(valueRef);

    // absent
    assertFalse(segment.removeLoadingValue(key, hash, valueRef));

    // live
    table.set(0, entry);
    // don't increment count; this is used during computation
    assertTrue(segment.removeLoadingValue(key, hash, valueRef));
    // no notification sent with removeLoadingValue

    LoadingValueReference<Object, Object> valueRef = new LoadingValueReference<>();
    entry.setValueReference(valueRef);

    // absent
    assertFalse(segment.removeLoadingValue(key, hash, valueRef));

    // live
    table.set(0, entry);
    // don't increment count; this is used during computation
    assertTrue(segment.removeLoadingValue(key, hash, valueRef));
    // no notification sent with removeLoadingValue

public class AbstractCacheTest extends TestCase {

  public void testGetIfPresent() {
    final AtomicReference<Object> valueRef = new AtomicReference<>();
    Cache<Object, Object> cache =
        new AbstractCache<Object, Object>() {
          @Override
          public @Nullable Object getIfPresent(Object key) {
            return valueRef.get();
          }
        };

    assertNull(cache.getIfPresent(new Object()));