onHidden method
Called when the app is hidden
Implementation
@mustCallSuper
void onHidden() {
  if (_checkDisposed('onHidden')) return;
  ZenLogger.logDebug('Controller $runtimeType hidden');
}
Called when the app is hidden
@mustCallSuper
void onHidden() {
  if (_checkDisposed('onHidden')) return;
  ZenLogger.logDebug('Controller $runtimeType hidden');
}