Issue #6287: enable AddMethodParameter to match overridden methods

[Anmol202005]

Improves AddMethodParameter so that methodPattern resolution includes overridden methods from interfaces and superclasses.

• Fixes: #6287

Checklist

• [x] I've added unit tests to cover both positive and negative cases
• [x] I've read and applied the recipe conventions and best practices
• [x] I've used the IntelliJ IDEA auto-formatter on affected files

[Anmol202005]

@timtebeek kindly review :)

[timtebeek]

Thanks for the runnable example! I'm off here today, but will try to circle back next week.

I had thought we could clear this up with just changing the expected method pattern instead.

[Anmol202005]

ping @timtebeek

[timtebeek]

Will likely move into next week before I can get to this; I've got some online trainings to give and a weekend ahead first. 🙏🏻