sbn_1_1unordered__set.html" class="m-doc">unordered_<wbr />set</a> to copy.</td>
                </tr>
              </tbody>
              <tfoot>
                <tr>
                  <th>Returns</th>
                  <td>Reference to this.</td>
                </tr>
              </tfoot>
            </table>
          </div></section>
          <section class="m-doc-details" id="aea1d0e1bd68cadfa6456a6f09f47c6c0"><div>
            <h3>
              <div class="m-doc-template">
                templat