>Parameters</h5>
      <table class="jd-tagtable">
        <tr>
          <th>extraMap</th>
          <td>Additional parameters about the producer. This map is immutable and will throw
     an exception if attempts are made to modify it.
</td>
        </tr>
      </table>
  </div>

    </div>
</div>


<a id="onProducerStart(java.lang.String, java.lang.String)"></a>

<div class="jd-details api apilevel-"> 
    <h4 class="jd-details-title">
      <span class="normal">
        public 
         
         
     