Github user oxygen311 commented on the issue:
https://github.com/apache/zeppelin/pull/3090
Now this feature is enabled only in python interpreter. So you can specify
`zeppelin.python.lspHost` and `zeppelin.python.lspPort` properties and use it.
Server is a separate process. I have been using
[python-language-server](https://github.com/palantir/python-language-server).
But there are much more [server
implementations](https://microsoft.github.io/language-server-protocol/implementors/servers/)
that can be used with any language.
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