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