/api.flutter.dev/flutter/dart-core/Object/runtimeType.html">runtimeType</a></li>

    <li class="section-title"><a href="../../page_visibility/PageVisibilityObserver-class.html#instance-methods">Methods</a></li>
    <li class="inherited"><a href="https://api.flutter.dev/flutter/dart-core/Object/noSuchMethod.html">noSuchMethod</a></li>
    <li><a href="../../page_visibility/PageVisibilityObserver/onBackground.html">onBackground</a></li>
    <li><a href="../../page_visibility/PageVisibilityObserver/onForegrou