netstandard does not have AppDomain.CurrentDomain.SetupInformation.ConfigurationFile

I have just upgraded a net4.5 classic dotnet project to multi-target project using net461/netstandard2.0 with reasonable success.

Did however come across this compiler error when it comes to gaining access legacy configuration files via:

AppDomain.CurrentDomain.SetupInformation.ConfigurationFile

This appears to not be a thing in netstandard. What would the alternative be, or is there a workaround?

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* ID: 766a6cab-4261-34a7-7a93-0a62ba21b9e8
* Version Independent ID: 7cef123e-5b0d-dba1-227b-6018d003c280
* Content: [AppDomain.SetupInformation Property (System)](https://docs.microsoft.com/en-us/dotnet/api/system.appdomain.setupinformation?view=netframework-4.7.2)
* Content Source: [xml/System/AppDomain.xml](https://github.com/dotnet/dotnet-api-docs/blob/master/xml/System/AppDomain.xml)
* Product: **dotnet-api**
* GitHub Login: @dotnet-bot
* Microsoft Alias: **dotnetcontent**