tml/BeforeInstallPromptEvent/prompt.html">prompt</a></span><span class="signature">(<wbr>)
            <span class="returntype parameter">&#8594; <a href="../dart-async/Future-class.html">Future</a></span>
          </span>
                  </dt>
        <dd>
           
                  
</dd>
        <dt id="composedPath" class="callable inherited">
          <span class="name"><a href="../dart-html/Event/composedPath.html">composedPath</a></span><span class="signature">(<wbr>)
            <span class="