// ========================================
// method
// ========================================
// === IPersistable ==========
public override void WriteExternal(IMemento memento, ExternalizeContext context)
{
base.WriteExternal(memento, context);
if (_outgoings != null)
{
memento.WriteExternalizables("Outgoings", _outgoings.As <IConnection, object>());
}
if (_incomings != null)
{
memento.WriteExternalizables("Incomings", _incomings.As <IConnection, object>());
}
}
