Github user anthonycorbacho commented on the issue: https://github.com/apache/zeppelin/pull/1338 @bzz Regarding your comment, I couldnt agree more, i am not a big fan of returning `null`. I created an issue in [JIRA - 1352](https://issues.apache.org/jira/browse/ZEPPELIN-1352) and I will address it ASAP after merging this PR
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