public void RemoveUserRelation(User user)
{
References.Remove(References.Where(r => r.To == user.Interactions).First());
if (References.Count() == 0)
Unpersist(Session);
}
public Interaction(Customer customer, User user, SessionBase session)
{
session.Persist(this);
customer.AddInteraction(this);
user.AddInteraction(this);
}