Question: Migrate from 4.3.1 to 6.6.0 and support for use Spring boot 3 and Spring 6

Description

Hi every one, I am recently working in migrate the version of plugin. I want to use spring http interface for client generations. in my last version of my custom project generator I was using retrofit2.

In 6.6.0 version I see that in libraries the project has spring http interface, but in my pom of my project how i can set librarie for use this new library.

In my client it's generating annotation with retrofit @POST and I wanna use @PostExchange from spring http interface for my clients operations

openapi-generator version

I am migrating my custom project from 4.3.1 to 6.6.0 of plugin generator

OpenAPI declaration file content or url

I set in my pom in my last version, I don't know how to set for use new libraries of spring http interface and use new annotations for my operation of my client.

  <configuration>
              <inputSpec>${project.basedir}/src/main/resources/openapi-clientcontract.yaml</inputSpec>
              <library>retrofit2</library>
  </configuration>

Command line used for generation

Steps to reproduce

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Related issues/PRs

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Suggest a fix/enhancement

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Review the Maven configuration using inputSpec and the retrofit2 library, then compare the generated Retrofit annotations with the requested Spring @PostExchange annotations. Confirm which generator option in version 6.6.0 controls this choice; done means a documented configuration or a clearly reproducible support gap.