</dd>
            <dt id="onMessage" class="property">
                <span class="top-level-variable-type">Stream&lt;<a href="dart-html/MessageEvent-class.html">MessageEvent</a>&gt;</span>
                <a href="polymer_app_layout.behaviors/MessagePort/onMessage.html">onMessage</a>
            </dt>
            <dd>
                <div class="readable-writable">
        read-only
    </div>
    Stream of <code class="prettyprint lang-dart">message</code> events handled by this <code class="prettyprint 