如何重写父类的getter

[pengjugame]

 public class Father
        {
            public virtual bool IsBestMan { get; set; } = true;
        }

        public class Son : Father
        {
            //如何让我现在的IsBestMan是false
        }

xlua

//不对
xlua.hotfix(CS.Son, "IsBestMan ", function() return true end) 
//不对
xlua.hotfix(CS.Son, "get_IsBestMan ", function() return true end) 

这里的xlua应该怎么写呢