{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"GenericParamDefKind::Const"}]}
            GenericParamDefKind::Const { .. },
            GenericArg::Type(hir::Ty { kind: hir::TyKind::Array(_, len), .. }),
        ) if tcx.type_of(param.def_id).skip_binder() == tcx.types.usize => {