{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"cx.adt_def(cx.require_lang_item(TraitSolverLangItem::Poll)),"}]}
                cx.adt_def(cx.require_lang_item(TraitSolverLangItem::Poll)),
                cx,
                cx.mk_args(&[Ty::new_adt(