h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="co"># \donttest{</span></span></span>
<span class="r-in"><span><span class="co"># Fail gracefully if any resources are not available</span></span></span>
<span class="r-in"><span><span class="kw"><a href="https://rdrr.io/r/base/try.html" class="external-link">try</a></span><span class="op">(</span><span class="op">{</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span 