pan class="identifier">pointer_wrapper</span><span class="special">(</span><span class="identifier">Ptr</span> <span class="identifier">x</span><span class="special">);</span>
        <span class="keyword">operator</span> <span class="identifier">Ptr</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
        <span class="identifier">Ptr</span> <span class="identifier">get</span><span class="special">()</span> <span class="keyword">const</span><span class="