eyword">const</span> <span class="identifier">BinaryVisitor</span> <span class="special">&amp;</span> visitor<span class="special">,</span> <span class="identifier">Variant1</span><span class="special">&amp;&amp;</span> operand1<span class="special">,</span> 
                <span class="identifier">Variant2</span><span class="special">&amp;&amp;</span> operand2<span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyw