예제 #1
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        public override void Accept(VehicleVisitor v)
        {
            v.VisitBoat(this);

        }
예제 #2
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        public override void Accept(VehicleVisitor v)
        {
            v.VisitPlane(this);

        }
예제 #3
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 public virtual void Accept(VehicleVisitor v)
 { }