zentol commented on issue #7528: [hotfix] [utils] Implement utils without cost of "enum" URL: https://github.com/apache/flink/pull/7528#issuecomment-455478173 -1 as it stands; we use this pattern quite a lot since it gives you `final` and a private constructor for free. Please provide specifics on the costs that made you open this PR. FYI @tillrohrmann
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