{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"self.emit_bad_parenthesized_trait_in_assoc_ty(data);"}]}
                        self.emit_bad_parenthesized_trait_in_assoc_ty(data);
                    } else {
                        // FIXME(return_type_notation): we could issue a feature error