protected BreathFirstMapper(BreathFirstMapper original, Cloner cloner) : base(original, cloner) { }
protected BreathFirstMapper(BreathFirstMapper original, Cloner cloner) : base(original, cloner) { }
protected BreathFirstMapper(BreathFirstMapper original, Cloner cloner) : base(original, cloner) { }
protected BreathFirstMapper(BreathFirstMapper original, Cloner cloner) : base(original, cloner) { }