<PackageReference Include="System.Configuration.ConfigurationManager" Version="5.0.0" />

SettingsGroupDescriptionAttribute

Provides a string that describes an application settings property group. This class cannot be inherited.
namespace System.Configuration { [AttributeUsage(AttributeTargets.Class)] public sealed class SettingsGroupDescriptionAttribute : Attribute { private readonly string _description; public string Description => _description; public SettingsGroupDescriptionAttribute(string description) { _description = description; } } }