{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"ObligationCauseCode::HostEffectInExpr(def_id,"}]}
            ObligationCauseCode::HostEffectInExpr(def_id, _, hir_id, idx) => {
            }
                (def_id, hir_id, idx, ClauseFlavor::Const)