<PackageReference Include="System.Configuration.ConfigurationManager" Version="11.0.0-preview.3.26207.106" />

System.Configuration.Internal.IInternalConfigClientHost

public interface IInternalConfigClientHost
Defines interfaces that allow the internal .NET infrastructure to customize configuration.
namespace System.Configuration.Internal { public interface IInternalConfigClientHost { bool IsExeConfig(string configPath); bool IsRoamingUserConfig(string configPath); bool IsLocalUserConfig(string configPath); string GetExeConfigPath(); string GetRoamingUserConfigPath(); string GetLocalUserConfigPath(); } }