{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"//"}]}
                // without directly constructing them from `index`?
                // FIXME: This is not really the nicest way to get `InferenceVar`s. Can we get them
                let var = InferenceVar::from(index as u32).to_ty(Interner, kind);