error: Invalid attribute parameter(s): 'Xsubscription, Xname'. Expected 'subscription, name'
  --> $DIR/attr-invalid-name-values.rs:10:2
   |
10 |       /// Hello subscription
   |  _____^
11 | |     #[pubsub(Xsubscription = "hello", subscribe, Xname = "hello_subscribe", alias("hello_sub"))]
12 | |     fn subscribe(&self, _: Self::Metadata, _: typed::Subscriber<String>, _: u64);
   | |_________________________________________________________________________________^

error: aborting due to previous error