{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"//"}]}
// it's ok to implement `Send` as long as `P: Send, T: Send`
// `TaggedRef<P, T, ..>` is semantically just `{ ptr: P, tag: T }`, as such
unsafe impl<P, T> Send for TaggedRef<'_, P, T>