for valid symbols)</p>
</div>
      
    </li>
  
    <li>
      
        <span class='name'>block</span>
      
      
        <span class='type'>(<tt>Block</tt>)</span>
      
      
      
        &mdash;
        <div class='inline'>
<p>Callback to perform when the entire sequence completes</p>
</div>
      
    </li>
  
</ul>


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      <pre class="code"><span class=