{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"ty::Alias(ty::Opaque,"}]}
            ty::Alias(ty::Opaque, ty::AliasTy { def_id, args, .. }) if def_id.is_local() => {
        let process = |a: Ty<'tcx>, b: Ty<'tcx>| match *a.kind() {
                let def_id = def_id.expect_local();