{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"for"}]}
                        for (&original_lifetime, &def) in bound_vars.iter().rev() {
                    Scope::Binder { ref bound_vars, scope_type, s, .. } => {
                            if let DefKind::LifetimeParam = self.tcx.def_kind(original_lifetime) {