RequestHeaderService requestHeaderService = new RequestHeaderService() {
            @Override
            public List<RequestHeader> getRequestHeaderList(final String webConfigId) {
                return Collections.emptyList();
            }
        };
        ComponentUtil.register(requestHeaderService, RequestHeaderService.class.getCanonicalName());

        final WebAuthenticationService webAuthenticationService = ComponentUtil.getComponent(WebAuthenticationService.class);
        final RequestHeaderService requestHeaderService = ComponentUtil.getComponent(RequestHeaderService.class);
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        // HttpClient Parameters
        final Map<String, Object> paramMap = new HashMap<>();