Github user merrimanr commented on the issue:
https://github.com/apache/metron/pull/1213
The latest commit adds the Deprecated annotations to parse and
parseOptional and removes MultilineMessageParser. I also updated the
`MessageParserTest` with more tests to ensure we're handling the deprecated
methods appropriately. As a result of that, I changed the logic in
MessageParser.parseOptionalResult slightly to return an empty Optional rather
than an empty List to match the existing test. Let me know if anyone has a
problem with this.
Once we finish this I will make an announcement on the user and dev lists.
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