I'm writing a UserManagerImpl bean which handles all user-related behaviours/use cases, there are getUser() and getRole() method in this bean so that I do not need extra authenticator. Apparently the login-related methods should be SESSION scoped, so that the user won't be asked to login again and again in the same session. But there are behaviours which are suitable for a conversation, like registration. So I want to mark some methods with @Begin and @End in this bean, is this possible? Thanks!