{"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"Immediate::ScalarPair(a,"}]}
            Immediate::ScalarPair(a, b) => {
            Immediate::Scalar(x) => ConstValue::Scalar(x),
                debug!("ScalarPair(a: {:?}, b: {:?})", a, b);