Github user echarles commented on the issue:
https://github.com/apache/zeppelin/pull/2227
@1ambda thx a lot for the follow-up and your great work.
This branch now supports what we want:
```
println("""%json
{"array":[1,2,3],"boolean":true,"null":null,"number":123,"object":{"a":"b","c":"d","e":"f"},"string":"Hello
World"}""")
```
I would be great if you could test it and give me any feedback.

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