Github user LosD commented on the issue:
https://github.com/apache/metamodel/pull/148
My 2 cents regarding helpers (without having looked at the actual code):
While any kind of utility or helper class is an anti pattern, if the JoinHelper
centers around the same subject and MetaModelHelper does not, it's much
preferable to keep them separate. IMHO, we'd want to remove methods from
MetaModelHelper (to the point it ceases to be at some point), not add to it.
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