pub fn fold_subscribe_output<F, T: AstInfo, T2: AstInfo>(
folder: &mut F,
node: SubscribeOutput<T>,
) -> SubscribeOutput<T2>
pub fn fold_subscribe_output<F, T: AstInfo, T2: AstInfo>(
folder: &mut F,
node: SubscribeOutput<T>,
) -> SubscribeOutput<T2>