{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"ctx.with_lifetime_elision(LifetimeElisionKind::for_fn_ret(),"}]}
                    ctx.with_lifetime_elision(LifetimeElisionKind::for_fn_ret(), |ctx| {
                    );
                        subst.push(ctx.lower_ty(ret));