Github user okram commented on the issue:
https://github.com/apache/tinkerpop/pull/447
So this is now done and merged. This branch provided a wealth of testing
infrastructure, test cases, and ways of serializing `TraversalStrategy`
instances. Now, with all that, I think we should actually NOT have
`withStrategies(Map...)` and we should really make `g:TraversalStrategy`. I
started going down that road to see how easy it would be and its actually
pretty hard given how `GraphSONMapper` works -- and the need to register all
strategies by class. Anywho... if we do decide to go down that route then in
Gremlin-Python/etc. we would have `TraversalStrategy({config:map,is:this})`.
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