/**
* Remove a Userpermission from this entity.
*
* @param e the userpermission
*/
public void removeUserpermission(Userpermission e) {
e.unlinkFromParent();
userpermissions.remove(e);
}
/**
* Add a Userpermission to this entity.
*
* @param e the userpermission
*/
public void addUserpermission(Userpermission e) {
e.linkToParent(this);
userpermissions.add(e);
}