Github user spmallette commented on the issue: https://github.com/apache/tinkerpop/pull/448 I don't think there's a use case in the context of the python GLV, but we have that use case in GraphSON in legacy support for TinkerPop 2.x based GraphSON (the migration scenario mentioned). I don't know that we'd extend that to Python. I guess the point here is to try to maintain API consistency across all the languages, even if we don't quite have all the support for all the features from Java applicable to Python just yet.
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