{"ast_node_type":"other","tokens":[{"end":102,"kind":"keyword","start":0,"text":"[decode]"}]}
            [decode] is_late_bound_map: rustc_data_structures::fx::FxIndexSet<rustc_hir::ItemLocalId>,
            [decode] used_trait_imports: rustc_data_structures::unord::UnordSet<rustc_hir::def_id::LocalDefId>,
            [decode] impl_source: rustc_middle::traits::ImplSource<'tcx, ()>,