Github user conker84 commented on the issue:
https://github.com/apache/zeppelin/pull/2125
@jongyoul thanks for the answer, i checked the
[Spel](https://zeppelin.apache.org/docs/snapshot/development/writingzeppelinspell.html)
and the
[Visualization](https://zeppelin.apache.org/docs/latest/development/writingzeppelinvisualization.html)
and i understood they are **front-end only**. This contribution is a mixed
front/back-end becouse it want to provide a set of base api in order to enable
graph-databases's exploration (like Neo4j or others) with Zeppelin.
This contribution is the first step of #1582 the second is to implement the
Neo4j Interpreter on top to the GraphResult apis.
If you guys think there is a more valuable solution to this i'm happy to
talk about!
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