ass="cg-5">
       <td></td>
       <td>&#160;&#160;&#160;
       <a href="robustness/robustness.html#module-robustness.visual_robust"><code class="xref">robustness.visual_robust</code></a></td><td>
       <em></em></td></tr>
     <tr class="pcap"><td></td><td>&#160;</td><td></td></tr>
     <tr class="cap" id="cap-t"><td></td><td>
       <strong>t</strong></td><td></td></tr>
     <tr>
       <td><img src="_static/minus.png" class="toggler"
              id="toggle-6" style="display: none" alt="-" /></td>
  