"-1"></a><span class="co">#&gt;     switch(typeof(x), builtin = , special = , closure = &quot;fn&quot;, </span></span>
<span id="cb3-13"><a href="#cb3-13" aria-hidden="true" tabindex="-1"></a><span class="co">#&gt;         environment = &quot;env&quot;, symbol = if (is_missing(x)) {</span></span>
<span id="cb3-14"><a href="#cb3-14" aria-hidden="true" tabindex="-1"></a><span class="co">#&gt;             &quot;missing&quot;</span></span>
<span id="cb3-15"><a href="#cb3-15" aria-hidden="true" tabindex="-1"></a