1Module Module1 2 3 Public Class Test 4 5 Public Ambiguous As Integer 6 7 Public Class NestedTest 8 9 Public Function Impossible() As Integer 10 11 Return Ambiguous 12 End Function 13 End Class 14 End Class 15 16 Sub Main() 17 18 Dim instance As New Test.NestedTest 19 Dim x As Integer = instance.Impossible 20 'Runtime error: 21 'Unhandled Exception: System.InvalidProgramException: Invalid IL code in ConsoleApplication1.Module1/Test/NestedTest:Impossible (): IL_0001: ldfld 0: x04000001() 22 End Sub 23End Module