static void UseSqlite(IVitalityBuilder options) =>
options.AddDbConnectionEvaluator("Sqlite", () => new SqliteConnection(), "Data Source=:memory:;");
static void UseGetGoogle(IVitalityBuilder options) =>
options.AddHttpEvaluator("Google", "https://www.google.com");
static void UseHeadGoogle(IVitalityBuilder options) =>
options.AddHttpEvaluator("Google", () => new HttpRequestMessage(HttpMethod.Head, "https://www.google.com"), resp => Task.FromResult(resp.IsSuccessStatusCode));
static void UseNothing(IVitalityBuilder options) =>
AuthorizeSome(Id, options).AddEvaluator <Nothing>("Nothing", NothingFunc).Services.AddSingleton <Nothing>();