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