Github user StephanEwen commented on the issue: https://github.com/apache/flink/pull/2305 @zentol I think that works only in theory. In practice, probably no user is going to realize that this trick is possible (even if we put it into the JavaDocs). It also seems pretty mean thing to force a user to do. I am quite torn at the moment whether this is an incident to break the API - I am leaning towards yes.
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