an></span></code></pre></div>
    </div>

    <div id="arguments">
    <h2>Arguments</h2>
    <dl><dt>x</dt>
<dd><p>A fitted model object with certain associated S3 methods.
See <strong>Details</strong>.</p></dd>


<dt>cluster</dt>
<dd><p>A vector or factor indicating from which cluster the
  respective log-likelihood contributions from <code>loglik</code> originate.
  The length of <code>cluster</code> must be consistent with the <code>estfun</code>
  method to be used in the estimation of the 'meat' <code