lambda /stream

 public List<Vehiculo> completeVehiculoFiltrado(String query) {
        List<Vehiculo> suggestions = new ArrayList<>();
        List<Vehiculo> temp = new ArrayList<>();
        try {
            Boolean found = false;
            query = query.trim();

            String field = (String) UIComponent.getCurrentComponent(FacesContext.getCurrentInstance()).getAttributes().get("field");
            temp = vehiculoRepository.findRegex(field, query, true, new Document(field, 1));

            if (temp.isEmpty()) {
                return suggestions;
            } else {
                List<Vehiculo> validos = temp.stream()
                        .filter(x -> isVehiculoValid(x)).collect(Collectors.toList());
                if (validos.isEmpty()) {
                    return suggestions;
                }
                if (vehiculoList.isEmpty()) {
                    return validos;
                } else {
//                    validos.stream().map((v) -> vehiculoList.stream()
//                            .filter(x -> v.getIdvehiculo().equals(x.getIdvehiculo()))
//                            .findAny()
//                            .orElse(null)).filter((v2) -> (v2 != null)).forEachOrdered((v2) -> {
//                        suggestions.add(v2);
//                    });
//
//                    validos.stream().filter(predicate)
                    validos.forEach((v) -> {
                        Optional<Vehiculo> optional = vehiculoList.stream()
                                .filter(v2 -> v2.getIdvehiculo() == v.getIdvehiculo())
                                .findAny();
                        if (!optional.isPresent()) {
                            suggestions.add(v);
                        }
                    });

                }
            }

//            if (vehiculoList.isEmpty()) {
//                if (!temp.isEmpty()) {
//                    for (Vehiculo v : temp) {
//                        if (isVehiculoValid(v)) {
//                            suggestions.add(v);
//                        }
//                    }
//
//                }
//
//            } else {
//                if (!temp.isEmpty()) {
//
//                    for (Vehiculo v : temp) {
//                        found = false;
//                        for (Vehiculo v2 : vehiculoList) {
//                            if (v.getIdvehiculo() == v2.getIdvehiculo()) {
//                                found = true;
//                            }
//                        }
//                        if (!found && v.getActivo().equals("si") && v.getEnreparacion().equals("no")) {
//                            suggestions.add(v);
//                        }
//
//                    }
//                }
//
//            }
        } catch (Exception e) {
            JsfUtil.errorMessage("completeVehiculoFiltrado() " + e.getLocalizedMessage());
        }
        return suggestions;
    }