var subscriptions = SubscriptionDefinition.lookupSubscriptionByEngId(productId);
if (Objects.nonNull(subscriptions)) {
subscriptions.forEach(
subscriptionDefinition ->
subscriptionDefinition
.findVariantForEngId(productId)
.ifPresent(v -> products.add(v.getTag())));

private void handleRole(NormalizedFacts normalizedFacts, String role) {
  if (role != null) {
    normalizedFacts.getProducts().removeIf(FactNormalizer::isRhelVariant);

    var subscription = SubscriptionDefinition.lookupSubscriptionByRole(role);
    if (subscription.isPresent()) {
      var variant = subscription.get().findVariantForRole(role);
      variant.ifPresent(v -> normalizedFacts.getProducts().add(v.getTag()));
    }
  }
}