I have implemented to listen to event. But some of them does not work. The code worked correctly with Saved and MenuRendering event but does not work with Deleted and also Deleting. I am using version 7.2.2. Do I miss something ? Thanks

public class RegisterEvents : ApplicationEventHandler
{
    protected override void ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
    {
        ContentService.Saved += ContentService_Saved;
        ContentService.Deleted += ContentService_Deleted;
        TreeControllerBase.MenuRendering += TreeControllerBase_MenuRendering;
    }
}