an class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
    <span class="special">...</span>

<span class="keyword">private</span><span class="special">:</span>
    <span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="identifier">utility</span><span class="special">::</span><span class="identifier">string_t</span><span class="special">,</span> <span class="identifier">utility</