 node. ">addSource()</a> before using this function.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">nm</td><td>must be a bool (or convertible) node map. The algorithm will stop when it reaches a node <code>v</code> with <code>nm[v]==true</code>. </td></tr>
  </table>
  </dd>
</dl>

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