anchor.diff:    @override
     void initState() {
       super.initState();
  -    final state = serviceManager.serviceExtensionManager!
  +    final state = serviceManager.serviceExtensionManager
           .getServiceExtensionState(widget.service.extension);
   
       value = state.value.enabled;
  
positive.code:     });
  
      invokeAndCatchErrors(() async {
        await serviceManager.serviceExtensionManager!.setServiceExtensionState(
          widget.service.extension,
          enabled: value,
          value:
  
negative.code: 
          final wasSelected = extensionState.isSelected;
  
          serviceManager.serviceExtensionManager.setServiceExtensionState(
            extensionState.description.extension,
            enabled: !wasSelected,
            value: wasSelected
  