Github user ajs6f commented on the pull request: https://github.com/apache/jena/commit/21b37d1b8a4359de8f69786a57aa7d4283f3b779#commitcomment-11639466 Those warnings were there because without them, those inner class throw new deprecation warnings that don't really tell us anything-- it's a similar situation as to the one you spotted in `test_rdfcat`.
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