It seems that this is useful for languages like rust and go. Specification is [here](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#workspace_didChangeWatchedFiles) see https://github.com/rust-lang/rust-analyzer/issues/14669 for some more info.
It seems that this is useful for languages like rust and go. Specification is here
see rust-lang/rust-analyzer#14669 for some more info.