797     fn fold_span(&mut self, i: proc_macro2::Span) -> proc_macro2::Span {  in fold_span()  method
2241     let span = f.fold_span(node.span());  in fold_ident()
2361         span: f.fold_span(node.span),  in fold_index()
2683         apostrophe: f.fold_span(node.apostrophe),  in fold_lifetime()
2727         span: f.fold_span(node.span),  in fold_lit_bool()
2734     let span = f.fold_span(node.span());  in fold_lit_byte()
2743     let span = f.fold_span(node.span());  in fold_lit_byte_str()
2752     let span = f.fold_span(node.span());  in fold_lit_cstr()
2761     let span = f.fold_span(node.span());  in fold_lit_char()
2770     let span = f.fold_span(node.span());  in fold_lit_float()
2779     let span = f.fold_span(node.span());  in fold_lit_int()
2788     let span = f.fold_span(node.span());  in fold_lit_str()
3286 pub fn fold_span<F>(f: &mut F, node: proc_macro2::Span) -> proc_macro2::Span  in fold_span()  function