{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
        let a = u128::from(self.1) << 64 | u128::from(self.0);
    pub fn combine_commutative(self, other: Fingerprint) -> Fingerprint {
        let b = u128::from(other.1) << 64 | u128::from(other.0);