{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"ty::TraitRef::new(cx,"}]}
            ty::TraitRef::new(cx, cx.require_lang_item(TraitSolverLangItem::Sized), [output])
        let output_is_sized_pred = tupled_inputs_and_output.map_bound(|(_, output)| {
        });