<PackageReference Include="System.Configuration.ConfigurationManager" Version="6.0.0-preview.5.21301.5" />

IInternalConfigSystem

public interface IInternalConfigSystem
Defines an interface used by the .NET Framework to initialize application configuration properties.
bool SupportsUserConfig { get; }

Gets a value indicating whether the user configuration is supported.

object GetSection(string configKey)

Returns the configuration object based on the specified key.

void RefreshConfig(string sectionName)

Refreshes the configuration system based on the specified section name.