Github user jorgebay commented on the issue:
https://github.com/apache/tinkerpop/pull/890
`Pick` is covered by the cucumber tests and those features are passing:
https://github.com/apache/tinkerpop/blob/master/gremlin-javascript/src/main/javascript/gremlin-javascript/test/cucumber/feature-steps.js#L190
The problem is that we weren't exporting `pick` enum for users to access it.---
