Support for Type Hierarchy

[guw]

Probably needs extension of the protocol as well as in VScode?

[gorkem]

See microsoft/language-server-protocol#136 for protocol discussions

[Yanpas]

Isn't this functionality already implemented is Eclipse? The only thing left to do is to expose LSP-RPC method.

[fbricon]

It needs to be rewritten to decouple it from JDT UI. So, once we have standardized the protocol, then we'll refactor eclipse's internals for jdt.ls to conform to it

[Yanpas]

You may implement it as cquery project did as protocol extension and then rename this method. The LSP proposal is already 2 years old and seems will be accepted only when vs code developers need it.

[kittaakos]

PR: #823