s="op">)</span><span class="op">(</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">}</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># Define class C</span></span></span>
<span class="r-in"><span><span class="va">C</span> <span class="op">&lt;-</span> <span class="fu"><a href="new_class.html">new_class</a></span><span class="op">(</span><span class="va">D</span>, <span class="cn">F</span>, 