/// <summary>
/// When request is sent from administration domain of the site,
/// adds header Access-Control-Allow-Origin into response to enable cross origin resource sharing (CORS) with the administration.
/// </summary>
/// <param name="builder">The application builder.</param>
public static void UseResourceSharingWithAdministration(this ApplicationBuilder builder)
{
builder.RegisterModule(new CrossOriginResourceSharingWithCurrentSiteModule());
}
/// <summary>
/// Transparently handles preview URLs and also disables output caching in preview mode.
/// </summary>
/// <param name="builder">The application builder.</param>
public static void UsePreview(this ApplicationBuilder builder)
{
var module = new PreviewFeatureModule();
builder.RegisterModule(module);
}