Question: how to extend CodegenConstants for a codegen change in this repo

I'd like to make a PR change in this repo which will mirror the existing PR change that I've already made that targets the v2 master branch of swagger-codegen.

As part of this new v3 change I need to make a change to CodegenConstants and it looks like CodegenConstants is imported and compiled into the code in this repo at build time.

I see (at the time of writing), that https://oss.sonatype.org/content/repositories/snapshots/io/swagger/codegen/v3/swagger-codegen/3.0.25-SNAPSHOT/swagger-codegen-3.0.25-20210207.055740-17.jar is downloaded at mvn clean package build time and I imagine that this .jar is https://github.com/swagger-api/swagger-codegen/tree/3.0.0 tagged and built code.

What is the process for getting new CodegenConstants values into swagger-codegen 3.0.0 which will then enable me to make a change in this repo that depends on the newly introduced CodegenConstants values ?

Is the process that I first need to make a PR over in swagger-codegen 3.0.0 which will eventually be merged in and then subsequently will make its way into a oss.sonatype.org v3 swagger-codegen built snapshot in the future?

Thanks for any help, Joe

Start by running mvn clean package and inspect how the build obtains the snapshot JAR containing CodegenConstants; the issue names no source file or test. Confirm the required upstream swagger-codegen 3.0.0 change and snapshot or release handoff, then document the steps needed before this repository can consume the new values.