{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"(self.0.to_stable_hash_key(hcx),"}]}
        (self.0.to_stable_hash_key(hcx), self.1.to_stable_hash_key(hcx))
    fn to_stable_hash_key(&self, hcx: &HCX) -> Self::KeyType {
    }