Github user dkuppitz commented on the issue:
https://github.com/apache/tinkerpop/pull/486
I think we have 2 options:
1. reset requirements (a simple `this.requirements = null;`) at the end of
mutating methods (`addStep` and `removeStep`)
2. don't cache requirements before `applyStrategies()`
The problem with 1 is, that we would have to propagate the reset to all
child- and parent-traversals.
The problem with 2 is, that if we don't cache requirements while startegies
are being applied, why do we cache them at all? Are requirements used at
runtime?
Thoughts?
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