ecial">&lt;</span> <span class="identifier">Concept</span><span class="special">,</span> <span class="identifier">T</span> <span class="special">&amp;&amp;</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Concept2<span class="special">,</span> <span class="keyword">typename</span> Tag2<span class="special">&gt;</s