mplete, and then retrieves its result, if available.</p></div>
  <div class="jd-tagdata">
      <h5 class="jd-tagtitle">Parameters</h5>
      <table class="jd-tagtable">
        <tr>
          <th>timeout</td>
          <td>the maximum time to wait</td>
        </tr>
        <tr>
          <th>unit</td>
          <td>the time unit of the timeout argument</td>
        </tr>
      </table>
  </div>
  <div class="jd-tagdata">
      <h5 class="jd-tagtitle">Returns</h5>
      <ul class="nolist"><li>the computed 