{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"RegionUnificationTable(sv::UndoLog<ut::Delegate<RegionVidKey<'tcx>>>),"}]}
    RegionUnificationTable(sv::UndoLog<ut::Delegate<RegionVidKey<'tcx>>>),
    RegionConstraintCollector(region_constraints::UndoLog<'tcx>),
    ProjectionCache(traits::UndoLog<'tcx>),