MvvmValidation.Internal.ValidationRule.ValidationRule C# (CSharp) Method

        public ValidationRule(IValidationTarget target, Func<RuleResult> validateDelegate, Func<Task<RuleResult>> asyncValidateAction)
        {
            Guard.NotNull(target, nameof(target));
            Guard.Assert(validateDelegate != null || asyncValidateAction != null,
                "validateDelegate != null || asyncValidateAction != null");

            Target = target;
            ValidateDelegate = validateDelegate;
            AsyncValidateAction = asyncValidateAction ?? (() => Task.Run(() => ValidateDelegate()));
            Settings = new ValidationRuleSettings();
        }