Object writeReplace() {
    return new EnumSerializedForm<E>(delegate);
  }

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

  /*
   * This class is used to serialize ImmutableEnumSet instances.
   */
  @J2ktIncompatible // serialization

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

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

  @GwtIncompatible // NavigableSet
  @Override
  ImmutableSortedSet<C> createDescendingSet() {

    }

    Object writeReplace() {
      return new SerializedForm(charset);
    }

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

    private static final class SerializedForm implements Serializable {
      private final String charsetCanonicalName;

    }

    Object writeReplace() {
      return new SerializedForm(charset);
    }

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

    private static final class SerializedForm implements Serializable {
      private final String charsetCanonicalName;

  }

    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. */

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

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

  @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;