@PreDestroy
    public void destroy() {
        shutdownHookList.forEach(action -> {
            try {
                action.run();
            } catch (final Exception e) {
                logger.warn("Failed to process shutdown task.", e);
            }
        });
    }

    public String getUsername() {
        final RequestManager requestManager = ComponentUtil.getRequestManager();

            } else if (response.getContentException() != null) {
                logger.warn("ConfigSync request failed.", response.getContentException());
            } else {
                logger.warn("ConfigSync request failed. The response is {}", response.getContentAsString());
            }
        } catch (final IOException e) {
            logger.warn("ConfigSync request failed.", e);
        }
        return new String[0];