public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        stream(ComponentUtil.getFessConfig().getSearchDefaultPermissionsAsArray()).of(stream -> stream.forEach(name -> {
            defaultRoleList.add(name);
        }));
    }

    public Set<String> build(final SearchRequestType searchRequestType) {