List<Filial> filialsByCity = new CopyOnWriteArrayList<>();

        ExecutorService executorService = Executors.newFixedThreadPool(Location.SIBERIAN_DISTRICT.size());
        List<Future> futures = new ArrayList<>();

        for (String city : Location.SIBERIAN_DISTRICT) {
            Future future = executorService.submit(new Thread(() -> {
                Filial filial = twoGisWorkerService.getFilialByCity(fieldOfActivity, city);
                if (filial.getRating() > 0) {
                    filialsByCity.add(filial);
                }
            }));
            futures.add(future);
        }


        for (Future f : futures) {
            try {
                f.get();
            } catch (InterruptedException e) {
                e.printStackTrace();
            } catch (ExecutionException e) {
                e.printStackTrace();
            }
        }