TisonKun commented on issue #7528: [hotfix] [utils] Implement utils without cost of "enum" URL: https://github.com/apache/flink/pull/7528#issuecomment-455515916 Alright. I'm not quite experience in real world trade-off. Thanks for sharing your preference. Let me keep it in mind and see how it works :-) For now I will close this pull request if no objections in a few days. If you have time, I'd like to learn what omissions the enum approach provides besides `final class` and a private constructor.
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