{"ast_node_type":"variable","tokens":[{"end":50,"kind":"keyword","start":0,"text":"let"}]}
            let scope = self.local_parent(def_id);
                region.opt_param_def_id(self, generic_param_scope.to_def_id())?.as_local()?;
            if self.def_kind(scope) == DefKind::OpaqueTy {