following two event storming sessions with @pilloPl and @OlgaMaciaszek and the Spring Cloud Contract community we've decided to refactor the core modules of Spring Cloud Contract Verifier.
The main idea is that the current `JavaTestGenerator`'s implementation no longer uses complex logic to generate classes and methods.
We've introduced abstractions such as:
- class body builder (to build classes)
- groovy and java class metadata
- imports (for various frameworks)
- default setup for json, xml, restassured, jaxrs
- class annotations for spock, junit and junit5
- field insertion e.g. for messaging
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