Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/1371#issuecomment-157784970
Integrating it with the TypeExtractor means that the APIs recognize the
type and choose the type info properly.
I think @twalthr is probably the best to give pointers on how to integrate
this with the TypeExtractor.
BTW: Would be nice if we could make custom type integration easier by
defining an interface/static method that classes can implement to create their
own type information. That gives users an easy extension point.
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