<PackageReference Include="System.Configuration.ConfigurationManager" Version="11.0.0-preview.2.26159.112" />

System.Configuration.Internal.InternalConfigEventArgs

public sealed class InternalConfigEventArgs : EventArgs
Defines a class that allows the .NET infrastructure to specify event arguments for configuration events.
namespace System.Configuration.Internal { public sealed class InternalConfigEventArgs : EventArgs { public string ConfigPath { get; set; } public InternalConfigEventArgs(string configPath); } }