ass="op">=</span> <span class="cn">NULL</span>,</span>
<span>  df <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  <span class="va">...</span></span>
<span><span class="op">)</span></span>
<span></span>
<span><span class="co"># S3 method for ivreg</span></span>
<span><span class="fu"><a href="https://sandwich.R-Forge.R-project.org/reference/bread.html" class="external-link">bread</a></span><span class="op">(</span><span class="va">x</span>, <span class="va">...</span><span class="op">)