ui/Versions-class.html">Versions</a> singleton. This object exposes Dart, Skia and
Flutter engine versions.
                  <div class="features">final</div>
</dd>
        <dt id="window" class="property">
          <span class="name"><a href="dart-ui/window.html">window</a></span>
          <span class="signature">&#8594; <a href="dart-ui/Window-class.html">Window</a></span>         
        </dt>
        <dd>
          The <a href="dart-ui/Window-class.html">Window</a> singleton. This object exposes the