public static void ShouldBeNegative(this short actual, [InstantHandle] Func <string> customMessage)
        {
            var expected = default(short);

            actual.AssertAwesomely(v => Is.LessThan(v, expected), actual, expected, customMessage);
        }
        public static void ShouldBeNegative(this short actual, string?customMessage = null)
        {
            var expected = default(short);

            actual.AssertAwesomely(v => Is.LessThan(v, expected), actual, expected, customMessage);
        }