pub fn fold_type_ignore<U, F: Fold<U> + ?Sized>(
folder: &mut F,
node: TypeIgnore<U>,
) -> Result<TypeIgnore<F::TargetU>, F::Error>
pub fn fold_type_ignore<U, F: Fold<U> + ?Sized>(
folder: &mut F,
node: TypeIgnore<U>,
) -> Result<TypeIgnore<F::TargetU>, F::Error>