 class="r-in"><span><span class="fu">is</span><span class="op">(</span><span class="va">con</span>, <span class="st">"DSObject"</span><span class="op">)</span>  <span class="co">## True</span></span></span>
<span class="r-in"><span><span class="fu">is</span><span class="op">(</span><span class="va">rs</span>, <span class="st">"DSObject"</span><span class="op">)</span>   <span class="co">## True</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu"><a href="ds