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

    /**
     * Builds a set of roles from the request.

        if (isAdminUser(username)) {
            return false;
        }
        return isLdapAdminEnabled();
    }

    String getRoleSearchDefaultPermissions();

    default String[] getSearchDefaultPermissionsAsArray() {
        final PermissionHelper permissionHelper = ComponentUtil.getPermissionHelper();
        return split(getRoleSearchDefaultPermissions(), ",").get(stream -> stream.map(p -> permissionHelper.encode(p))