{"ast_node_type":"variable","tokens":[{"end":86,"kind":"keyword","start":0,"text":"let"}]}
                        let mut binder_idents: FxIndexSet<Ident> = Default::default();
                    let (span, sugg) = if span.is_empty() {
                        binder_idents.insert(Ident::from_str(name.unwrap_or("'a")));