pe-annotation"><a href="https://api.flutter.dev/flutter/dart-core/Object-class.html">Object</a></span> <span class="parameter-name">errorHandler</span></span>)
    <span class="returntype parameter">&#8594; <a href="../dartness/DartnessPipeline-class.html">DartnessPipeline</a></span>
  </span>
  

</dt>
<dd>
  Returns a new <a href="../dartness/DartnessPipeline-class.html">DartnessPipeline</a> with <code>errorHandler</code> added to the existing set of
handlers.
  

</dd>

        <dt id="addHandler" class=