/messageEvent.html">messageEvent</a></span>
                =
                <span class="constant-value">const <a href="polymer_app_layout/EventStreamProvider-class.html">EventStreamProvider</a>&lt;<a href="dart-html/MessageEvent-class.html">MessageEvent</a>&gt;<MessageEvent>('message')</span>
            </dt>
            <dd>
                <div class="is-const">
                    const
                </div>
                
            </dd>
            <dt id="offlineEvent" class="constant">
     