{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"GenericParamDefKind::Lifetime"}]}
        GenericParamDefKind::Lifetime => tcx.lifetimes.re_erased.into(),
    let only_region_params = |param: &ty::GenericParamDef, _: &_| match param.kind {
        GenericParamDefKind::Type { .. } | GenericParamDefKind::Const { .. } => {