csla: AmbiguousMatchException DataPortal.Fetch

Describe the bug Upgrading to 5.4.1 has a breaking change. Can’t have a DataPortal Interface method parameter without decorating method with [Fetch] attribute.

private void DataPortal_Fetch(ICriteriaBase criteria)
private void DataPortal_Fetch(IEnumerable<string> criteria)

Also happens using the new modifier on DataPortal_Execute. protected new async Task DataPortal_Execute

Version and Platform CSLA version: 5.4.1 OS: Windows, Linux, iOS, Android, etc. Platform: WinForms, WPF, ASP.NET Core, MVC, Xamarin, etc.

Code that Fails Sample app runs fine using 5.4.0. You will need to update csla to 5.4.1 to cause the error in the sample app. https://github.com/coder-rr/CslaDpTest

Stack Trace or Exception Detail Exception Message

CslaDpTest.CarList.[Fetch](String[]). Matches: 
CslaDpTest.CarList[Void DataPortal_Fetch(System.Collections.Generic.IEnumerable`1[System.String])],
Csla.ReadOnlyListBase`2[[CslaDpTest.CarList, CslaDpTest, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],
[CslaDpTest.CarInfo, CslaDpTest, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]][Void DataPortal_Fetch(System.Object)]

Stack Trace

at Csla.Reflection.ServiceProviderMethodCaller.FindDataPortalMethod[T](Type targetType, Object[] criteria, Boolean throwOnError)
at Csla.Server.DataPortal.<Fetch>d__11.MoveNext()