Java 15 hidden classes

"JEP 371 introduces hidden classes in Java 15. Hidden classes have the following implications to existing code:

`Class::getName` traditionally returns a binary name, but for a hidden class it returns a string that contains an ASCII forward slash (/) and is therefore not a binary name. Programs that assume the returned string is a binary name might need to be updated to handle hidden classes. That said, the longstanding practice of Unsafe::defineAnonymousClass was to define classes whose names were not binary names, so some programs may already handle such names successfully."

Do we need to do anything to handle this?

Start by reviewing JEP 371 and locating the repository's handling of Java class names and linkage checks. Determine whether hidden classes require a code change or regression tests, and document the outcome with tests covering any affected behavior.

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