 <span class="ot">NULL</span>) {</a>
<a class="sourceLine" id="cb190-3" title="3"></a>
<a class="sourceLine" id="cb190-4" title="4">  <span class="co"># defaults to NULL</span></a>
<a class="sourceLine" id="cb190-5" title="5">  group &lt;-<span class="st"> </span><span class="ot">NULL</span></a>
<a class="sourceLine" id="cb190-6" title="6"></a>
<a class="sourceLine" id="cb190-7" title="7">  <span class="cf">if</span> (crosstalk<span class="op">::</span><span class="kw">is.SharedData</span>(data)) {</a>
<a c