{"ast_node_type":"import","tokens":[{"end":74,"kind":"keyword","start":0,"text":"//"}]}
        // Can use any typing env, since `Ordering` is always monomorphic.
    pub fn from_ordering(c: std::cmp::Ordering, tcx: TyCtxt<'tcx>) -> Self {
        let ty = tcx.ty_ordering_enum(DUMMY_SP);