<PackageReference Include="System.Configuration.ConfigurationManager" Version="6.0.2" />

IgnoreSectionHandler

public class IgnoreSectionHandler : IConfigurationSectionHandler
Provides a legacy section-handler definition for configuration sections that are not handled by the Configuration types.
public IgnoreSectionHandler()

Initializes a new instance of the IgnoreSectionHandler class.

public virtual object Create(object parent, object configContext, XmlNode section)

Creates a new configuration handler and adds the specified configuration object to the section-handler collection.