Github user HeartSaVioR commented on the issue:
https://github.com/apache/flink/pull/6252
@fhueske
Yeah, that would be great. I'm happy to revert the change and introduce new
class.
I'm just not sure where to place and how to name it, since it will be going
to have just one method, `getReturnType(Expression): TypeInformation[_]`.
Would `org.apache.flink.table.api.ExpressionUtil` be OK for new utility
class?
Thanks in advance!---
