{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"SubregionOrigin::ReferenceOutlivesReferent(_,"}]}
            SubregionOrigin::ReferenceOutlivesReferent(_, a) => a,
            SubregionOrigin::Reborrow(a) => a,
            SubregionOrigin::CompareImplItemObligation { span, .. } => span,