Github user kaspersorensen commented on the pull request: https://github.com/apache/metamodel/pull/101#issuecomment-220355905 The most recent deprecations where introduced in MM 4.4 AFAIK. Those where related to the split of FunctionType into AggregateFunction and ScalarFunction interfaces. So the deprecations have been there since the release date of 4.4.0: 2015-10-12.
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