if (indexResponse.isAcknowledged()) {
                logger.info("Created {} index.", indexName);
                return true;
            }
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to create {} index.", indexName);
            }
        } catch (final Exception e) {
            logger.warn("{} is not found.", indexConfigFile, e);
        }

        return false;