{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"doc_url.map(|s|"}]}
        doc_url.map(|s| s.trim_matches('"').trim_end_matches('/').to_owned() + "/")
        let doc_url = attrs.by_key(sym::doc).find_string_value_in_tt(sym::html_root_url);
    }