   </table>
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<p>Return the number of items in an indexmap. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">x</td><td>The indexmap instance. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The number of items in the indexmap. </dd></dl>

</div>
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