{"ast_node_type":"function","tokens":[{"end":72,"kind":"keyword","start":0,"text":"fn"}]}
    fn partial_cmp(&self, other: &Interned<'a, T>) -> Option<Ordering> {
impl<'a, T: PartialOrd> PartialOrd for Interned<'a, T> {
        // Pointer equality implies equality, due to the uniqueness constraint,