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https://issues.apache.org/jira/browse/TINKERPOP3-710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14563360#comment-14563360
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Marko A. Rodriguez commented on TINKERPOP3-710:
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Now it does. :)
https://github.com/apache/incubator-tinkerpop/blob/master/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/lambda/PredicateTraverser.java
https://github.com/apache/incubator-tinkerpop/blob/master/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/dsl/graph/GraphTraversal.java#L669-L671
(likewise, there exists a {{FunctionTraverser}}).
> choose(Predicate,...) throws UnsupportedOperationException
> ----------------------------------------------------------
>
> Key: TINKERPOP3-710
> URL: https://issues.apache.org/jira/browse/TINKERPOP3-710
> Project: TinkerPop 3
> Issue Type: Bug
> Reporter: Matt Frantz
> Assignee: Marko A. Rodriguez
> Fix For: 3.0.0.GA
>
>
> This is on the 3.0.0.M9-incubating tag.
> {noformat}
> gremlin> g.V().choose({ v -> false }, __.out(), __.in())
> The FilterTraversal can only be used as a predicate traversal
> Display stack trace? [yN]
> {noformat}
> This looks like a regression. I don't see any unit tests for the
> {{Predicate}} form of {{choose}}. I happen to maintain my own regressions
> for this, so I could contribute them. Not sure of the fix though.
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