docs: public QueryResult query( String query,
                                String queryLanguage ) {
          String url = jsonRestClient.appendToURL(QUERY_METHOD);
          String contentType = contentTypeForQueryLanguage(queryLanguage);
          JSONRestClient.Response response = jsonRestClient.postStream(new ByteArrayInputStream(query.getBytes()), url, contentType);
          if (!response.isOK()) {
              throw new RuntimeException(JdbcI18n.invalidServerResponse.text(url, response.asString()));
          }
          return new QueryResult(response.json());
      }