@Override
    public byte getOrder() {
        // This is run after substitutions.
        return 122;
    }
Adds JSON values into the generated OpenAPI model using a JSON Patch
like "add" operation that also generated intermediate objects as needed.
Any existing property is overwritten.

<p>This mapper is applied using the contents of {@code openapi.jsonAdd}.
This is run after substitutions so it is unaffected by them.
smithy-openapi/src/main/java/software/amazon/smithy/openapi/fromsmithy/mappers/OpenApiJsonAdd.java