@Override
    public List<ValidationEvent> validate(Model model) {
        AwsTagIndex awsTagIndex = AwsTagIndex.of(model);
        List<ValidationEvent> events = new ArrayList<>();
        for (ServiceShape service : model.getServiceShapesWithTrait(TagEnabledTrait.class)) {
            events.addAll(validateService(service, awsTagIndex));
        }
        return events;
    }
Validates service satisfies AWS tagging requirements.
smithy-aws-traits/src/main/java/software/amazon/smithy/aws/traits/tagging/ServiceTaggingValidator.java