/**
* Remove a Userrole from this entity.
*
* @param e the userrole
*/
public void removeUserrole(Userrole e) {
e.unlinkFromParent();
userroles.remove(e);
}
/**
* Add a Userrole to this entity.
*
* @param e the userrole
*/
public void addUserrole(Userrole e) {
e.linkToParent(this);
userroles.add(e);
}