<PackageReference Include="System.Configuration.ConfigurationManager" Version="10.0.10" />

System.Configuration.ConfigurationSectionGroup

public class ConfigurationSectionGroup
public bool IsDeclarationRequired { get; }

public bool IsDeclared { get; }

public string Name { get; }

public string SectionGroupName { get; }

public ConfigurationSectionGroupCollection SectionGroups { get; }

public ConfigurationSectionCollection Sections { get; }

public string Type { get; set; }

public ConfigurationSectionGroup()

public void ForceDeclaration()

public void ForceDeclaration(bool force)