{"ast_node_type":"function","tokens":[{"end":78,"kind":"keyword","start":0,"text":"fn"}]}
    fn is_builtin_binop(&mut self, lhs: &Ty, rhs: &Ty, op: BinaryOp) -> bool {
        // Special-case a single layer of referencing, so that things like `5.0 + &6.0f32` work (See rust-lang/rust#57447).