{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"this.ribs[TypeNS].push(forward_ty_ban_rib);"}]}
                            this.ribs[TypeNS].push(forward_ty_ban_rib);
                        if let Some(expr) = default {
                            this.ribs[ValueNS].push(forward_const_ban_rib);