states.add(RegistrationStateType.REGISTERED.name());
    public Set<String> getValidNextStates() {	Set<String> states = new HashSet<String>();	states.add(RegistrationStateType.CONCLUDED.name());	states.add(RegistrationStateType.SCHOOLPARTCONCLUDED.name());	states.add(RegistrationStateType.CANCELED.name());	states.add(RegistrationStateType.INTERRUPTED.name());	states.add(RegistrationStateType.FLUNKED.name());	states.add(RegistrationStateType.ABANDONED.name());	return states;    }