@J2ktIncompatible
    @SuppressWarnings("unchecked") // reading data stored by writeObject
    private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
      stream.defaultReadObject();
      setInverse((AbstractBiMap<V, K>) requireNonNull(stream.readObject()));
    }

    @GwtIncompatible // Not needed in the emulated source.
    @J2ktIncompatible
    Object readResolve() {

    return (double) sum();
  }

  private void writeObject(ObjectOutputStream s) throws IOException {
    s.defaultWriteObject();
    s.writeLong(sum());
  }

  private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
    s.defaultReadObject();
    busy = 0;
    cells = null;
    base = s.readLong();
  }

    return (double) sum();
  }

  private void writeObject(ObjectOutputStream s) throws IOException {
    s.defaultWriteObject();
    s.writeLong(sum());
  }

  private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
    s.defaultReadObject();
    busy = 0;
    cells = null;
    base = s.readLong();
  }

  }

  @J2ktIncompatible // serialization
  private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
    stream.defaultReadObject();
    @SuppressWarnings("unchecked") // reading data stored by writeObject
    ConcurrentMap<E, Integer> deserializedCountMap =
        (ConcurrentMap<E, Integer>) requireNonNull(stream.readObject());

    return (double) sum();
  }

  private void writeObject(ObjectOutputStream s) throws IOException {
    s.defaultWriteObject();
    s.writeLong(sum());
  }

  private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
    s.defaultReadObject();
    busy = 0;
    cells = null;
    base = s.readLong();
  }

    return Primitives.wrap(type).cast(value);
  }

  private Object writeReplace() {
    return new SerializedForm<>(delegate());
  }

  private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  /** Serialized form of the map, to avoid serializing the constraint. */

  @J2ktIncompatible
  @Override
  Object writeReplace() {
    return new SerializedForm<>(range, domain);
  }

  @GwtIncompatible // serialization
  @J2ktIncompatible
  private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  private static final long serialVersionUID = 0;

      Set<Entry<V, K>> result = inverseEntrySet;
      return (result == null) ? inverseEntrySet = new InverseEntrySet<K, V>(forward) : result;
    }

    @GwtIncompatible("serialization")
    private void readObject(ObjectInputStream in) throws ClassNotFoundException, IOException {
      in.defaultReadObject();
      this.forward.inverse = this;
    }
  }

    ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(serializedForm));

    ImmutableSet<?> deserialized = (ImmutableSet<?>) in.readObject();
    EnumSet<?> delegate = (EnumSet<?>) in.readObject();

    assertEquals(original, deserialized);
    assertTrue(delegate.remove(SomeEnum.A));
    assertTrue(deserialized.contains(SomeEnum.A));
  }

  @J2ktIncompatible

/**
 * Basic implementation of {@code Multiset<E>} backed by an instance of {@code Map<E, Count>}.
 *
 * <p>For serialization to work, the subclass must specify explicit {@code readObject} and {@code
 * writeObject} methods.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault