The example server is still using params.rootUri https://github.com/microsoft/vscode-extension-samples/blob/master/lsp-multi-server-sample/server/src/server.ts#L25

Which makes sense in the usecase, but as it says, that it's deprecated and we should use params.workspaceFolders which does not help us to figure out which workspace folder this server was started for.

So is starting a server for every workspace folder still what's recommended? https://github.com/microsoft/vscode-extension-samples/blob/master/lsp-multi-server-sample/README.md#L5

Or should we handle this different nowadays?