{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"Some(ty::ImplTraitInTraitData::Trait"}]}
            Some(ty::ImplTraitInTraitData::Trait { opaque_def_id, .. }) => {
        DefKind::AssocTy => match tcx.opt_rpitit_info(item_def_id.to_def_id()) {
                return variance_of_opaque(