Knock out BC31902

````
Imports System.Runtime.CompilerServices

Public Module Program

Public Sub AddRange(Of T)([Me] As IList(Of T), <[ParamArray]> elements As IEnumerable(Of T))
For Each e In elements
[Me].Add(e)
Next
End Sub

Public Sub AddRange(Of T)([Me] As List(Of T), <[ParamArray]> elements As T())
For Each e In elements
[Me].Add(e)
Next
End Sub

Public Sub Main(args As String())
Dim l As IList(Of Integer) = New List(Of Integer)
l.AddRange(New Integer(){1,2,3})
End Sub
End Module
````

Raises BC31902

What's going on here is this library is written in VB specifically to spoof-out the C# compiler to allow `params IEnumerable` to work (and a few other things C# should be able to do but can't but that's for another day). But in further development I found it necessary to call the methods within the implementation and it got kicked out.

The simplest solution is not to treat it as a params argument if it's not an array type, and given the existing error this breaks no code.