hiddenLifecycleState method
All views of an application are hidden, either because the application is about to be paused (on iOS and Android), or because it has been minimized or placed on a desktop that is no longer visible (on non-web desktop), or is running in a window or tab that is no longer visible (on the web).
Implementation
@override
@Deprecated('Use hiddenLifecycleState instead')
void hiddenLifecycleState() {}