">&amp;</span><span class="identifier">headers</span><span class="special">();</span>

    <span class="keyword">const</span> <span class="identifier">headers_type</span> <span class="special">&amp;</span><span class="identifier">headers</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>

    <span class="identifier">body_type</span> <span class="special">&amp;</span><span class="identifier">body</span><span class="special">();</span>

    <span class="key