ml" class="external-link">requireNamespace</a></span><span class="op">(</span><span class="st">"mev"</span>, quietly <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="kw">if</span> <span class="op">(</span><span class="va">got_mev</span><span class="op">)</span> <span class="op">{</span></span></span>
<span class="r-in"><span>  <span class="kw"><a href="https://rdrr.io/r/base/library.htm