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https://issues.apache.org/jira/browse/TINKERPOP-1280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15487629#comment-15487629
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ASF GitHub Bot commented on TINKERPOP-1280:
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Github user dkuppitz commented on the issue:
https://github.com/apache/tinkerpop/pull/404
You mean `VertexProgram.getTraverserRequirements()`? [It already has its
JavaDoc](https://github.com/apache/tinkerpop/pull/404/files#diff-ca108f45ec7b5a288dfce8019f1a6813R188).
> VertexPrograms should declare traverser requirements
> ----------------------------------------------------
>
> Key: TINKERPOP-1280
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1280
> Project: TinkerPop
> Issue Type: Improvement
> Components: process
> Affects Versions: 3.2.0-incubating
> Reporter: Daniel Kuppitz
> Assignee: Daniel Kuppitz
> Fix For: 3.2.3
>
>
> VertexPrograms should declare their {{TraverserRequirement}} which can then
> be propagated by the {{program()}} step. Most VPs (at least the ones I have
> written so far) rely on (labeled) path information and thus will fail if the
> actual traversal doesn't use any other steps with the same traverser
> requirements. I keep running into this issue whenever I write a new VP.
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