                            <td class="parameter_annotations"> </td>
                        </tr>
                        </tbody>
                    </table>
                </div>
            </div>
            <div class="refsect3">
                <a name="librdf-iterator-map-handler.returns"></a><h4>Returns</h4>
                <p> item in keep the iteration or NULL to remove it</p>
            </div>
        </div>
        <hr>
        <div class="refsect2">
            <a name="librdf