ifier">boost</span><span class="special">::</span><span class="identifier">coroutines</span><span class="special">::</span><span class="identifier">asymmetric_coroutine</span><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">tuple</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;&gt;::</span><span class="identifier">push_typ