Github user tzulitai commented on the issue:
https://github.com/apache/flink/pull/4149
@zhenzhongxu at the very least, I would expose these new values as
protected methods, and let the fields be private. Then, have particular tests
that verify the values are correct.
The exposing methods should have good Javadoc on the purpose of exposing
them (and in what cases they could be used for).
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