public static IComponentBuilder Configure <TOptions>(this IComponentBuilder builder, IConfiguration config, string @namespace)
where TOptions : class, new()
{
builder.AddOptions <TOptions>();
var services = builder.Container;
services
.RegisterInstance(new ConfigurationChangeTokenSource <TOptions>(@namespace, config))
.SingleInstance().As <IOptionsChangeTokenSource <TOptions> >();
services
.RegisterInstance(new NamedConfigureFromConfigurationOptions <TOptions>(@namespace, config))
.SingleInstance()
.As <IConfigureNamedOptions <TOptions> >()
.As <IConfigureOptions <TOptions> >()
.As <IConfigureNamedOptions <TOptions> >();
return(builder);
}