that is past the last entity of the group.">end()</a></code>.</p>
<dl class="section return"><dt>Returns</dt><dd>An iterator to the first entity of the group. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a7c8602aabac11b094162e687a7a07668">&#9670;&#160;</a></span>contains()</h2>

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template&lt;typename... Owned, typena