>&lt;</span><span class="keyword">typename</span> <span class="identifier">MultiPass</span><span class="special">&gt;</span>
        <span class="keyword">static</span> <span class="keyword">void</span> <span class="identifier">clear_queue</span><span class="special">(</span><span class="identifier">MultiPass</span><span class="special">&amp;</span> <span class="identifier">mp</span><span class="special">);</span>
    <span class="special">};</span>

    <span class="keyword">struct</span> <span class="iden