public static AwsTagIndex of(Model model) {
        return model.getKnowledge(AwsTagIndex.class, AwsTagIndex::new);
    }
Index of AWS tagging trait information in a service closure and convenient
access to tag operations by name in service closures.
smithy-aws-traits/src/main/java/software/amazon/smithy/aws/traits/tagging/AwsTagIndex.java