{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"wfcx.register_wf_obligation(span,"}]}
                    wfcx.register_wf_obligation(span, loc, ty.into());
                    let ty = wfcx.deeply_normalize(span, Some(WellFormedLoc::Ty(item_id)), ty);
                }