able">
          <span class="name"><a href="../dart-core/UnimplementedError/UnimplementedError.html">UnimplementedError</a></span><span class="signature">(<span class="parameter" id="-param-message">[<span class="type-annotation"><a href="../dart-core/String-class.html">String</a></span> <span class="parameter-name">message</span>]</span><wbr>)</span>
        </dt>
        <dd>
           
        </dd>
      </dl>
    </section>

    <section class="summary offset-anchor" id="instance-properties">
      <