lang-dart">MessagePort</code>.
            </dd>
        </dl>
    </section>



      <section class="summary" id="instance-methods">
          <h2>Methods</h2>
          <dl class="callables">
              <dt id="addEventListener" class="callable">
                  <span class="name ">addEventListener</span><span class="signature">(<wbr><span class="parameter" id="addEventListener-param-type"><span class="type-annotation">String</span> <span class="parameter-name">type</span></span>, <span class="param