         <td class="paramtype">DisplayContext *&#160;</td>
          <td class="paramname"><em>context</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">ros::NodeHandle &amp;&#160;</td>
          <td class="paramname"><em>update_nh</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const boost::function&lt; void(boost::shared_ptr&lt; const MessageType &gt