如何让基类方法访问其派生类的阴影属性？

Given this example:

鉴于这个例子:

Imports System

Public Module Module1
Public Sub Main()
    Console.WriteLine("Expect 'WheelValue' here.")
    Dim car as New Car()
    car.DoSomething()

    Console.WriteLine("Expect 'FordWheelValue' here.")
    Dim ford as New Ford()
    ford.DoSomething()
End Sub

Public Class Car
    Public Sub DoSomething()
        Console.WriteLine("Car.DoSomething()")
        Console.WriteLine("Wheel=" + Wheel.Value)
        Console.WriteLine(Environment.NewLine)
    End Sub
    Public Property Wheel As New Wheel()
End Class

Public Class Ford
    Inherits Car
    Public Shadows Property Wheel As New FordWheel()        
End Class

Public Class Wheel
    Public Value As String = "WheelValue"
End Class

Public Class FordWheel
    Public Value As String = "FordWheelValue"
End Class
End Module
Imports System