">&gt;</span> <span class="keyword">bool</span> <a name="id673144-bb"></a><span class="identifier">contains</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">SubObject</span> <span class="special">&amp;</span> sub<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
<li><pre class="literallayout"><span class="keyword">bool</span> <a name="id673161-bb"></a><span class="identifier">within</span><span class="spec