/span> <span class="identifier">base_type</span><span class="special">(</span> <span class="special">&amp;</span><span class="identifier">sbuffer</span> <span class="special">)</span> <span class="special">{}</span>
    <span class="comment">//...</span>
<span class="special">};</span>
</pre>
<p>
      Other projects can use similar custom base classes. The technique is basic
      enough to make a template, with a sample template class in this library. The
      main template parameter is the type of the e