><span class="special">(</span><span class="identifier">MultiPass</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">mp</span><span class="special">);</span>
    <span class="special">};</span>

    <span class="keyword">struct</span> <span class="identifier">shared</span> <span class="special">{};</span>
<span class="special">};</span>
</pre>
<p>
        It is possible to derive the struct <code class="computeroutput"><span class="identifier">unique</span><