Github user mjsax commented on the pull request:
https://github.com/apache/flink/pull/983#issuecomment-130298853
I modified by hand. Was not aware of `TupleGenerator`. Just had a look into
it. Not sure if `Tuple0` can be included appropriately. For example, it is no
generic class; it is implemented as soft singleton. Extending `TupleGenerator`
would result in special handling of Tuple0 in every place. Thus, adding it
manually and not generate the source code for it seems better to me.
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