@Override
  public CompletableFuture<Map<DeviceId, Optional<Map<String, String>>>>
      getMultipleDeviceLastKnownCategoriesInfo(
          Set<UserId> userIds, Set<DeviceId> deviceIds, TracingContext tracingContext) {
    logger.debug(
        tracingContext,
        "LastKnownService -> getting getUsersLastKnowns for userIds {}",
        userIds.stream().map(UserId::value).collect(Collectors.joining(",")));

    final CompletableFuture<Map<DeviceId, Optional<Map<String, String>>>> resultFuture =
        new CompletableFuture<>();

    final List<String> userIdsParams =
        userIds.stream().map(UserId::value).collect(Collectors.toList());
    final CSVParams categories = new CSVParams(WANTED_CATEGORIES);
    final Call<UsersLastKnownsInternal> call =
        lastKnownApi.getUsersLastKnowns(
            userIdsParams, categories, tracingContext.getCorrelationId().getValue());

    enqueue(
        call,
        tracingContext,
        handleResultWith404(
            resultFuture,
            true,
            result ->
                Optional.ofNullable(result)
                    .map(
                        r ->
                            r.getUsers().stream()
                                .flatMap(item -> item.getDevices().stream())
                                .collect(
                                    JavaUtils.collectMapAndAddMissing(
                                        deviceIds,
                                        d -> DeviceId.create(d.getDeviceId()),
                                        d ->
                                            d.getLastKnowns().stream()
                                                .collect(
                                                    Collectors.toMap(
                                                        LastKnownInternal::getCategory,
                                                        LastKnownInternal::getInfo)))))
                    .orElse(Collections.emptyMap()),
            tracingContext));
    return resultFuture;
  }