code: public void sendBulkDataAsync(List<? extends Map<String, ?>> bulkSourceList,
              String index, String type) {
          executeBulkRequestAsync(
                  buildBulkIndexRequestBuilder(bulkSourceList
                          .stream().map(source -> jmESClient
                                  .prepareIndex(index, type).setSource(source))
                          .collect(toList())));
      }
docs: Send bulk data async.
  
  @param bulkSourceList the bulk source list
  @param index          the index
  @param type           the type