n><span class="co"># S3 method for class 'metaMDB'</span></span>
<span><span class="fu">rename</span><span class="op">(</span><span class="va">.data</span>, <span class="va">...</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># S3 method for class 'metaMDB'</span></span>
<span><span class="va">x</span><span class="op">[</span><span class="va">i</span><span class="op">]</span></span>
<span></span>
<span><span class="co"># S3 method for class 'metaMDB'</span></span>
<span><span cla