{"ast_node_type":"function","tokens":[{"end":72,"kind":"keyword","start":0,"text":"fn"}]}
    fn error_on_extra_if(&mut self, cond: &P<Expr>) -> PResult<'a, ()> {
        if let ExprKind::Binary(Spanned { span: binop_span, node: binop }, _, right) = &cond.kind