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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