}
                stream(accessToken.getPermissions()).of(stream -> stream.forEach(permissionSet::add));
                final String name = accessToken.getParameterName();
                stream(request.getParameterValues(name)).of(stream -> stream.filter(StringUtil::isNotBlank).forEach(permissionSet::add));
                return OptionalEntity.of(permissionSet);

     * @return The parameter value array.
     */
    public static String[] getParamValueArray(final HttpServletRequest request, final String param) {
        return simplifyArray(request.getParameterValues(param));
    }

    /**
     * Creates a facet info.
     *
     * @param request The request.
     * @return The facet info.
     */