RestHighLevelClient client = new RestHighLevelClient(
            RestClient.builder(new HttpHost(hostname, port, scheme))
                    .setPathPrefix(pathPrefix));
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);

for (SearchHit hit : searchResponse.getHits()) {
        D dto = (D) objectMapper.readValue(
                hit.getSourceAsString(), //<-- only 10 field in _sources
                params.getDtoClass());

        ((List<D>) result.getResult()).add(dto);}