{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"[]"}]}
            [] effective_visibilities: rustc_middle::middle::privacy::EffectiveVisibilities,
                >,
            [] upvars_mentioned: rustc_data_structures::fx::FxIndexMap<rustc_hir::HirId, rustc_hir::Upvar>,