}
    return hash;
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    if (obj instanceof PairwiseEquivalence) {
      @SuppressWarnings("unchecked")
      PairwiseEquivalence<Object, Object> that = (PairwiseEquivalence<Object, Object>) obj;
      return this.elementEquivalence.equals(that.elementEquivalence);
    }

    return false;
  }

  @Override

        asDocMeta().version(version);
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    public String getLogMessage() {
        return getUrl();
    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);
        }

        final Map<String, Object> doc = new HashMap<>();
        doc.put("url", "http://example.com");

        final DocBoostMatcher matcher = new DocBoostMatcher() {
            @Override
            public boolean match(Map<String, Object> map) {
                return true;
            }

            @Override
            public float getValue(Map<String, Object> map) {
                return 2.5f;

    @Subscribe
    public abstract void overriddenAndAnnotatedInSubclass(Object o);

    @Subscribe
    public abstract void overriddenInSubclass(Object o);
  }

  static class SubClass extends SuperClass {
    final List<Object> overriddenAndAnnotatedInSubclassEvents = new ArrayList<>();
    final List<Object> overriddenInSubclassEvents = new ArrayList<>();

    @Subscribe
    @Override

    @Subscribe
    public abstract void overriddenAndAnnotatedInSubclass(Object o);

    @Subscribe
    public abstract void overriddenInSubclass(Object o);
  }

  static class SubClass extends SuperClass {
    final List<Object> overriddenAndAnnotatedInSubclassEvents = new ArrayList<>();
    final List<Object> overriddenInSubclassEvents = new ArrayList<>();

    @Subscribe
    @Override

      @GwtIncompatible // serialization
      Object writeReplace() {
        return super.writeReplace();
      }
    };
  }

  @Override
  public int size() {
    return axesSizeProduct[0];
  }

  @Override
  public boolean contains(@Nullable Object object) {
    if (!(object instanceof List)) {
      return false;
    }
    List<?> list = (List<?>) object;
    if (list.size() != axes.size()) {

  }

  /**
   * Compares the specified object to this multimap for equality.
   *
   * <p>Two {@code ListMultimap} instances are equal if, for each key, they contain the same values
   * in the same order. If the value orderings disagree, the multimaps will not be considered equal.
   */
  @Override
  public boolean equals(@Nullable Object object) {
    return super.equals(object);
  }

)

// WarmBackendGetOpts is used to express byte ranges within an object. The zero
// value represents the entire byte range of an object.
type WarmBackendGetOpts struct {
	startOffset int64
	length      int64
}

// WarmBackend provides interface to be implemented by remote tier backends
type WarmBackend interface {
	Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error)

/**
 * Implementation of {@link Multimaps#filterKeys(Multimap, Predicate)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
class FilteredKeyMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMultimap<K, V> implements FilteredMultimap<K, V> {
  final Multimap<K, V> unfiltered;
  final Predicate<? super K> keyPredicate;

/**
 * Implementation of {@link Multimaps#filterKeys(Multimap, Predicate)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
class FilteredKeyMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMultimap<K, V> implements FilteredMultimap<K, V> {
  final Multimap<K, V> unfiltered;
  final Predicate<? super K> keyPredicate;