Adds a Checkstyle validation to ensure that the Guava cache is not used. #3631
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Description
With #3586 updating to the Caffeine cache, we may still end up with Guava's cache being used. This PR adds a Checkstyle violation to prevent importing the Guava cache.
It's not perfect. I found you can work-around it by qualifying the class:
But, that is more likely to be noticed during a code review.
Issues Resolved
N/A
Check List
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