public static Predicate[] deviceListPredicates( CriteriaBuilder cb, Root<Device> from, List<String> guids, Optional<HivePrincipal> principal) { final List<Predicate> predicates = deviceSpecificPrincipalPredicates(cb, from, principal); if (guids != null && !guids.isEmpty()) { predicates.add(from.get(GUID).in(guids)); } return predicates.toArray(new Predicate[predicates.size()]); }