{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"[sym::FnOnce,"}]}
                        [sym::FnOnce, sym::FnMut, sym::Fn].into_iter().find_map(|symbol| {
                    let fn_trait_span =
                            if self.prev_token.is_ident_named(symbol) {