Automated rollback of commit 654d1dbf1e6dd652cd6e8ca003643ddf02266ec2. #4219
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Automated rollback of commit 654d1db.
*** Reason for rollback ***
That did not handle varargs well: specifically array arguments in a varargs position.
I'll fix and roll forward.
*** Original change description ***
Handle Joiner.on(...) in AbstractToString.
Not yet handling the Iterable overload; that's a bit more involved given the lack of prior art.