href="codebook.html">codebook()</a></code> or <code><a href="metadata_list.html">metadata_list()</a></code>.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">metadata</span><span class="op">(</span><span class="va">data</span><span class="op">)</span></span>
<span></span>
<span><span class="fu">metadata</span><span class="op">(</span