internal static AppToken VisibleApp(Application app) =>
new AppToken(
id: IdFactory.App(app),
isActive: app.IsActive(),
isVisible: true,
version: app.VersionName(),
books: app.Workbooks.OfType <Workbook>().Select(Book));
internal static AppToken App(Application app)
{
Requires.NotNull(app, nameof(app));
return(app.IsVisible()
? VisibleApp(app)
: InvisibleApp(IdFactory.App(app)));
}