[GitHub] tinkerpop issue #908: TINKERPOP-2017 Add check for Column in `by(Function)`

[spmallette]

Github user spmallette commented on the issue:

    https://github.com/apache/tinkerpop/pull/908
  
    Cherry picked this commit to tp32 - a0a243b256dbfdf66bb5ce24958fc91c7e6eed03


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