{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"ty_freshen_map:"}]}
    ty_freshen_map: FxHashMap<ty::InferTy, Ty<'tcx>>,
    const_freshen_count: u32,
    const_freshen_map: FxHashMap<ty::InferConst, ty::Const<'tcx>>,