<wbr><span class="parameter" id="postMessage-param-message"><span class="type-annotation">Object</span> <span class="parameter-name">message</span></span>, [<span class="parameter" id="postMessage-param-transfer"><span class="type-annotation">List&lt;<a href="dart-html/MessagePort-class.html">MessagePort</a>&gt;</span> <span class="parameter-name">transfer</span></span>])
                      &#8594;
                      <span class="returntype">void</span>
                  </span>
              </dt>
  