{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"Some(ast::WherePredicateKind::RegionPredicate(ast::WhereRegionPredicate"}]}
                    Some(ast::WherePredicateKind::RegionPredicate(ast::WhereRegionPredicate {
                    let bounds = this.parse_lt_param_bounds();
                        lifetime,