ss="md" nowrap> const</td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Obtain a copy of this thread's <a class="el" href="classlog4cxx_1_1_m_d_c.html">MDC</a> prior to serialization or asynchronous logging. 
<p>
    </td>
  </tr>
</table>
<a class="anchor" name="31d9fbc3746c91b951bb037056120a53"></a><!-- doxytag: member="log4cxx::spi::LoggingEvent::getMDCKeySet" ref="31d9fbc3746c91b951bb037056