    </tr>
                        <tr>
                            <td class="parameter_name"><p>map_function</p></td>
                            <td class="parameter_description"><p>the function to operate</p></td>
                            <td class="parameter_annotations"> </td>
                        </tr>
                        <tr>
                            <td class="parameter_name"><p>free_context</p></td>
                            <td class="parameter_description"><p>the function 