*/
    protected void flush() {
        if (bulkRequestBuilder != null) {
            final BulkResponse response = bulkRequestBuilder.execute().actionGet(requestTimeout);
            if (response.hasFailures()) {
                logger.warn("Failed to update scores: {}", response.buildFailureMessage());
            }
            bulkRequestBuilder = null;
        }
    }

    /**

        consumer.accept(builder);
        try {
            final BulkResponse response = builder.execute().get();
            if (response.hasFailures()) {
                throw new SearchEngineClientException(response.buildFailureMessage());
            }
            return true;
        } catch (final InterruptedException e) {

                            crawlingConfigHelper.getPipeline(configId).ifPresent(s -> builder.setPipeline(s));
                        });
                if (response.hasFailures()) {
                    if (logger.isDebugEnabled()) {
                        final BulkItemResponse[] items = response.getItems();
                        if (docList.size() == items.length) {

                        return StringUtil.EMPTY;
                    });
            final BulkResponse response = builder.execute().actionGet(fessConfig.getIndexBulkTimeout());
            if (response.hasFailures()) {
                logger.warn("Failed to register {}: {}", dataPath, response.buildFailureMessage());
            }
        } catch (final Exception e) {

    }

    if (closeExchange) {
      exchange?.detachWithViolence()
    }

    interceptorScopedExchange = null
  }

  fun retryAfterFailure(): Boolean =
    exchange?.hasFailure == true &&
      exchangeFinder!!.routePlanner.hasNext(exchange?.connection)

  /**
   * Returns a string that describes this call. Doesn't include a full URL as that might contain
   * sensitive information.