Github user FlorianHockmann commented on the issue:
https://github.com/apache/tinkerpop/pull/842
Yeah, but they all extend `NumberConverter`, don't they? I remember that
there was a decision for gremlin-python a while back to separate serializers
and deserializers in different classes to stay consistent with gremlin-java.
So, yes, it would be good if you reverted that.---
