special">(</span><span class="identifier">trailer</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;{}));</span>
</pre>
<p>
        Alternatively, callers can take over the generation and lifetime management
        of the serialized trailer fields by passing in a non-owning string:
      </p>
<pre class="programlisting"><sp