如何在WPF的Xceed PropertyGrid中隐藏子属性？

public class CustomPropertyDefinition : PropertyDefinition
{
    public override bool IsBrowsable
    {
        get { return false; } // 设置为false表示隐藏属性
    }
}

public class MyClass
{
    [Editor(typeof(MyEditor), typeof(MyEditor))]
    [PropertyOrder(0)]
    [Category("Category")]
    [Description("Description")]
    [Browsable(true)]
    [ReadOnly(false)]
    [ExpandableObject]
    [CustomPropertyDefinition] // 使用自定义的属性特性
    public MySubClass SubProperty { get; set; }
}