e">columns</span><span
              class="method-args">()</span>
            <span class="method-click-advice">click to toggle source</span>
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          <div class="method-description">
            
            
            

            
            <div class="method-source-code" id="columns-source">
<pre>
<span class="ruby-comment"># File app/models/pseudo_model.rb, line 23</span>
<span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-i