in crates/lsp-client/src/msg.rs [420:428]
fn serialize_notification_with_null_params() {
let msg = Message::Notification(Notification {
method: "exit".into(),
params: serde_json::Value::Null,
});
let serialized = serde_json::to_string(&msg).unwrap();
assert_eq!("{\"method\":\"exit\"}", serialized);
}