public virtual void Unsubscribe(IAviationAdministration administration) { if (aviationAdministrations.Contains(administration)) { aviationAdministrations.Remove(administration); } }
public virtual void Subscribe(IAviationAdministration administration) { if (!aviationAdministrations.Contains(administration)) { aviationAdministrations.Add(administration); } }
public virtual void Subscribe(IAviationAdministration administration) { if (!aviationAdministrations.Contains(administration)) aviationAdministrations.Add(administration); }
public virtual void Unsubscribe(IAviationAdministration administration) { if (aviationAdministrations.Contains(administration)) aviationAdministrations.Remove(administration); }