public async Task Doesnt_throw_NullReferenceException_when_instance_not_null_async()
        {
            var v      = new BadValidatorDisablesNullCheck();
            var result = await v.ValidateAsync((string)null);

            result.IsValid.ShouldBeTrue();
        }
        public void Doesnt_throw_NullReferenceException_when_instance_not_null()
        {
            var v      = new BadValidatorDisablesNullCheck();
            var result = v.Validate((string)null);

            result.IsValid.ShouldBeTrue();
        }