ass="identifier">trailers</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>

<span class="keyword">private</span><span class="special">:</span>
    <span class="identifier">headers_type</span> <span class="identifier">headers_</span><span class="special">;</span>
    <span class="identifier">body_type</span> <span class="identifier">body_</span><span class="special">;</span>
    <span class="identifier">headers_type</span> <span class="identifier">trailer