is argument (instead of <code>|</code>), then the covariance matrix of the random
    effects is assumed to be diagonal.</p></dd>

<dt id="arg-data">data<a class="anchor" aria-label="anchor" href="#arg-data"></a></dt>
<dd><p>a data.frame containing the variables required in <code>fixed</code> and
    <code>random</code>.</p></dd>

<dt id="arg-family">family<a class="anchor" aria-label="anchor" href="#arg-family"></a></dt>
<dd><p>a <code><a href="https://rdrr.io/r/stats/family.html" class="external-link">fam