in crates/lsp-client/src/msg.rs [372:379]
fn shutdown_with_explicit_null() {
let text = "{\"jsonrpc\": \"2.0\",\"id\": 3,\"method\": \"shutdown\", \"params\": null }";
let msg: Message = serde_json::from_str(text).unwrap();
assert!(
matches!(msg, Message::Request(req) if req.id == 3.into() && req.method == "shutdown")
);
}