public User(Person person) { this(); if (person == null) { throw new DomainException("error.no.person"); } super.setPerson(person);
private User() { super(); setRootDomainObject(RootDomainObject.getInstance());
    public User(Person person) {	this();	if (person == null) {	    throw new DomainException("error.no.person");	}	super.setPerson(person);    }