{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"assert_eq!(v1.partial_cmp(&v1),"}]}
    assert_eq!(v1.partial_cmp(&v1), Some(Ordering::Equal)); // only uses Interned::eq, not S::cmp
    assert_eq!(v3a.partial_cmp(&v2), Some(Ordering::Greater));
    assert_eq!(v3a.partial_cmp(&v3b), Some(Ordering::Equal)); // only uses Interned::eq, not S::cmp