{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"//"}]}
        // `ExprKind::Paren(ExprKind::Underscore)` and should also be lowered to `GenericArg::Infer`
        // We cannot just match on `ExprKind::Underscore` as `(_)` is represented as
        match c.value.peel_parens().kind {