Github user dkuppitz commented on the issue:
https://github.com/apache/tinkerpop/pull/355
Yea, lots of issues in this code area.
`enforceHomogenousCollectionIfPresent` also has the potential to throw NPE's
(if the first element of a non-empty collection is `null`). I will create
another ticket for those issues.
For this PR:
VOTE: +1
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