{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"known_type_outlives:"}]}
        known_type_outlives: Vec<ty::PolyTypeOutlivesPredicate<'tcx>>,
        param_env: ty::ParamEnv<'tcx>,
        extra_bounds: impl IntoIterator<Item = OutlivesBound<'tcx>>,