相当于VB.net中的PHP __invoke（）

Is there an equivalent of PHP __invoke() in VB.net?

I would call an object as method, like this:

Public Class Testclass

    Public Function MagicFunction( ByVal obj as object ) as Boolean
        Trace.WriteLine( obj.toString() )
    End Function
End Class

An the call look like this

Dim myTestObj = new Testclass()
myTestobj(1) 'should output: 1