                                    </tr>                                    <tr>
                                        <td>header:</td>
                                        <td><a href="#header_map">HeaderMap</a></td>
                                        <td><span class="font-light">map of request headers (string key, string value)</span></td>
                                    </tr>                                    <tr>
                                        <td>method:</td>
                  