lass="identifier">Parser</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="identifier">bar</span><span class="special">(</span><span class="identifier">Parser</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">p</span><span class="special">)</span>
<span class="special">{</span>
    <span class="comment">// Inject data2</span>
    <span class="keyword">auto</span> <span class="keyword">const</span> <span class="identifier