int result = hashCode;
    return (result == 0) ? hashCode = delegate.hashCode() : result;
  }

  @Override
  public String toString() {
    return delegate.toString();
  }

  // All callers of the constructor are restricted to <E extends Enum<E>>.
  @Override
  @J2ktIncompatible // serialization
  Object writeReplace() {
    return new EnumSerializedForm<E>(delegate);
  }

    int result = hashCode;
    return (result == 0) ? hashCode = delegate.hashCode() : result;
  }

  @Override
  public String toString() {
    return delegate.toString();
  }

  // All callers of the constructor are restricted to <E extends Enum<E>>.
  @Override
  @J2ktIncompatible // serialization
  Object writeReplace() {
    return new EnumSerializedForm<E>(delegate);
  }