span class="keyword">noexcept</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="permissions.html#idm46093042814384-bb"><span class="identifier">set_unrestricted</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="permissions.html#idm46093042811744-bb"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="permissions.html