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https://issues.apache.org/jira/browse/TINKERPOP-1669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16051846#comment-16051846
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stephen mallette commented on TINKERPOP-1669:
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[~okram] can we do this? or did you have some additional response for bryn?
> EdgeVertexStep should be designed for extension
> -----------------------------------------------
>
> Key: TINKERPOP-1669
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1669
> Project: TinkerPop
> Issue Type: Improvement
> Components: process, structure
> Affects Versions: 3.2.4
> Reporter: Bryn Cooke
>
> GraphStep, VertexStep and PropertiesStep are all not final, so I was
> surprised to find that I couldn't extend EdgeVertexStep. In the end I had to
> duplicate the entire class....
> If there are concerns about simply making this class non-final then it could
> be designed for extension by making most of the methods final (except
> toString), but the leaving the class non-final.
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