/span> <span class="identifier">iterator_adaptor</span><span class="special">::</span><span class="identifier">reference</span> <span class="identifier">dereference</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>

    <span class="keyword">template</span> <span class="special">&lt;</span>
    <span class="keyword">class</span> <span class="identifier">OtherDerived</span><span class="special">,</span> <span class="keyword">class</span> <span class="ident