{"ast_node_type":"variable","tokens":[{"end":72,"kind":"keyword","start":0,"text":"if"}]}
        if let Expr::Literal(Literal::ByteString(_)) = self.body[expr] {
        // Like slice patterns, byte string patterns can denote both `&[u8; N]` and `&[u8]`.
            if let Some((inner, ..)) = expected.as_reference() {