ecial">::</span><span class="identifier">iterator_core_access</span><span class="special">;</span>
    <span class="keyword">void</span> <span class="identifier">increment</span><span class="special">()</span> <span class="special">{</span> <span class="keyword">this</span><span class="special">-&gt;</span><span class="identifier">base_reference</span><span class="special">()</span> <span class="special">=</span> <span class="keyword">this</span><span class="special">-&gt;</span><span class="identifier">bas