n class="special">&lt;</span> <span class="identifier">Ts</span><span class="special">...</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">U</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> Axis<span class="special">&gt;</span