{"ast_node_type":"impl","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//"}]}
            // assoc impl items of traits are live if the corresponding trait items are live
        let (impl_block_id, trait_def_id) = match self.tcx.def_kind(local_def_id) {
            DefKind::AssocConst | DefKind::AssocTy | DefKind::AssocFn => (