private boolean verifyListTagsApi(OperationShape listTagsApi, Model model) {
        // Verify Tags map or list member but on the output.
        return exactlyOne(collectMemberTargetShapes(listTagsApi.getOutputShape(), model),
                memberEntry -> TaggingShapeUtils.isTagDesiredName(memberEntry.getKey().getMemberName())
                        && TaggingShapeUtils.verifyTagsShape(model, memberEntry.getValue()));
    }
Validates that service satisfies the AWS tagging requirements.
smithy-aws-traits/src/main/java/software/amazon/smithy/aws/traits/tagging/TaggableResourceValidator.java