We must take a similar path to add post-configuration values but implement the IPostConfigureOptions<TOptions> instead. To achieve this, we update the ConfigureAllConfigureMeOptions class to implement that interface: namespace OptionsConfiguration;public class ConfigureAllConfigureMeOptions : IPostConfigureOptions<ConfigureMeOptions>, IConfigureNamedOptions<ConfigureMeOptions>{ // Omitted previous code public void PostConfigure(string?name, ConfigureMeOptions options) { options.Lines = options.Lines.Append( $”ConfigureAll:PostConfigure name: {name}”); }} In the preceding code, […]