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https://issues.apache.org/jira/browse/TINKERPOP3-818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14720002#comment-14720002
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Marko A. Rodriguez commented on TINKERPOP3-818:
-----------------------------------------------

It would not be prudent to make this a "step," but to leverage a 
{{P}}-predicate.

{code}
g.V().out().is(type(vertex))
{code}

...where {{P.type()}} is a predicate.

In general, always think about how to parameterize an existing step as opposed 
to just increasing the size of the existing step library.

> Consider an instanceOf() Step 
> ------------------------------
>
>                 Key: TINKERPOP3-818
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP3-818
>             Project: TinkerPop 3
>          Issue Type: Improvement
>          Components: process
>    Affects Versions: 3.0.0-incubating
>            Reporter: stephen mallette
>            Assignee: Marko A. Rodriguez
>
> A step that checks the type of the value passing through the traversal.



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