{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"ocx.register_obligation(traits::Obligation::new(tcx,"}]}
        ocx.register_obligation(traits::Obligation::new(tcx, cause, param_env, predicate));
        let cause = ObligationCause::new(span, impl_ct_def_id, code.clone());
    }