{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"type"}]}
    type Value<'tcx> = (A::Value<'tcx>, B::Value<'tcx>);
impl<A: ParameterizedOverTcx, B: ParameterizedOverTcx> ParameterizedOverTcx for (A, B) {
}