tr>
                            <td class="parameter_name"><p>map_context</p></td>
                            <td class="parameter_description"><p>Map data context pointer.</p></td>
                            <td class="parameter_annotations"> </td>
                        </tr>
                        <tr>
                            <td class="parameter_name"><p>item</p></td>
                            <td class="parameter_description"><p>Pointer to the current item in the iteration.</p></td>
