roperty">
                <span class="top-level-variable-type">bool</span>
                <a href="polymer_app_layout.behaviors/TouchEvent/altKey.html">altKey</a>
            </dt>
            <dd>
                <div class="readable-writable">
        read-only
    </div>
    
            </dd>
            <dt id="bubbles" class="property">
                <span class="top-level-variable-type">bool</span>
                <span class="name ">bubbles</span>
            </dt>
            <dd>
             