{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"//"}]}
            // Also avoid linting on `& mut? (p0 | .. | pn)`, #64106.
            // Avoid linting on `&(mut x)` as `&mut x` has a different meaning, #55342.
            Ref(p, m) => self.check_unused_parens_pat(cx, p, true, *m == Mutability::Not, keep_space),