Github user spmallette commented on the pull request:
https://github.com/apache/incubator-tinkerpop/pull/175#issuecomment-163658527
I'm not sure what to make of this, but I looked at the code for writing and
I don't think i agree with your assessment that:
> Writer only creates a single directional edge in the destination vertex.
as a test, I tried out the tests that you added to `IoTest`. They pass for
me with AND without your change to the `GraphSONReader`. In other words, I can
set that value to `IN` or `OUT` and the tests pass. Does that happen for you?
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