{"ast_node_type":"other","tokens":[{"end":28,"kind":"keyword","start":0,"text":"wfcx.register_bound("}]}
        wfcx.register_bound(
        wfcx.register_wf_obligation(ty_span, Some(WellFormedLoc::Ty(def_id)), ty.into());
            traits::ObligationCause::new(