class SearchSource {

    public static SearchSourceBuilder newBuilder() {
        return new SearchSourceBuilder();
    }

      SearchSource(final ActorRef pubSubMediator,
            final ActorRef conciergeForwarder,
            final Duration thingsAskTimeout,
            final Duration searchAskTimeout,
            @Nullable final JsonFieldSelector fields,
            final JsonFieldSelector sortFields,
            final StreamThings streamThings,
            final String lastThingId);

}