pan class="keyword">void</span> <a class="link" href="syslog_backend.html#idm46093045427408-bb"><span class="identifier">set_severity_mapper</span></a><span class="special">(</span><span class="identifier">severity_mapper_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="syslog_backend.html#idm46093045425360-bb"><span class="identifier">set_local_address</span