Spring Consider throwing an error if setVersionRequired and setDefaultVersion are called on ApiVersionConfigurer

Currently the ApiVersionConfigurer.setVersionRequired(...) states:

When a defaultVersion is also set, this is automatically set to false.

With Spring Boot property support it's pretty easy set version-required and default-version. I think it might be better to consider this a configuration error and fail startup early.

Comment From: rstoyanchev

We can indeed flag that if both are explicitly set.