 class="op">(</span><span class="va">model.biv</span>, data<span class="op">=</span><span class="va">df.biv</span>, constraints <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/list.html" class="external-link">list</a></span><span class="op">(</span>focus.parameters<span class="op">=</span><span class="va">fp</span><span class="op">)</span><span class="op">)</span></span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="downlit sourceCode r">
<code class="sourceCode 