return null;
        }
        if (lower.startsWith(userPrefix)) {
            if (permission.length() > userPrefix.length()) {
                return aclPrefix + systemHelper.getSearchRoleByUser(permission.substring(userPrefix.length()));
            }
            return null;
        }
        if (lower.startsWith(groupPrefix)) {
            if (permission.length() > groupPrefix.length()) {

        return false;
    }

    /**
     * Gets the search role for a given user.
     *
     * @param name The username.
     * @return The search role.
     */
    public String getSearchRoleByUser(final String name) {
        return createSearchRole(ComponentUtil.getFessConfig().getRoleSearchUserPrefix(), name);
    }

    /**
     * Gets the search role for a given group.
     *